No.  I have made no chagnes at all, and this install was the latest from the get go.  I have had it running for over a month, and actually hadn't even been on the site for a few days.  A member called me to complain...

I only have used 4.07, that is it:

DotNetNuke Version: The DotNetNuke application version you are running	04.07.00
Check For Upgrades? Select this option if you would like the application to check if there are upgrades available.
Upgrade Available? Displays an icon if a new version of the application is available
Data Provider: The provider name which is identified as the default data provider in the web.config file	SqlDataProvider
.NET Framework: The .NET Framework version which the application is running on - specified through IIS	2.0.50727.1433
ASP.NET Identity: The Windows user account under which the application is running. This is the account which needs to be granted folder permissions on the server.	WEBD19\IUSR_67.199.45.170
Host Name: The Host Name of the site.	WEBD19
Permissions: The code access permissions available in the hosting environment.	ReflectionPermission, WebPermission
Relative Path: The relative location of the application in relation to the root of the site.
Physical Path: The physical location of the site root on the server.	D:\inetpub\northstarcamaroclub
GUID: The globally unique identifier which can be used to identify this application.	C13F3AE2-90C9-4583-B0BE-3874DB73EE3A

Host Portal: Select the default portal	NCC Module Test Portal Northstar Camaro Club Forum Northstar Camaro Club of Minnesota Northstar Camaro Club Store
Host Title: Enter the name of your Hosting Account
Host URL: Enter the url of your Hosting Account
Host Email: Enter a support email adress for your Hosting Account

As for the forum module, I have only used the latest one:

Module Name: This is the name of the module - it will uniquely identify the module in the system. You must enter a Name for the Module Folder Name: Enter a Folder Name for the location of the Module's files. You must enter a Folder Name for the location of the Module's files. Friendly Name: This is the Friendly Name of the Module A Module must have a Friendly Name Description: Provide a description of the module. The core forum module for DotNetNuke. Version: Enter the version number for this module in the form ##.##.## A Module must have a Version number in the form of ##.##.## A Module must have a Version number in the form of ##.##.## Compatibility: (Optional) A regular expression which describes the module compatibility with the host application based on version. A sample regular expression would be ^[0-9]{1}[0-9]{1}.[0-9]{1}[0-9]{1}.[0-9]{1}[0-9]{1}$ - indicating the module is compatible with all versions from 00.00.00 to 99.99.99 Dependencies: (Optional) A semi-colon delimited list of TypeNames which the module is dependent upon ( ie. System.Web.UI.ScriptManager; etc... ) Permissions: (Optional) A semi-colon delimited list of Permissions which the module requires ( ie. ReflectionPermission; WebPermission; etc... ) Controller Class: This is the Controller Class for the module. If the module supports optional Interfaces, such as ISearchable and IPortable, this is the class where these interfaces are implemented. Supported Features These options are updated automatically depending on the module and the features that the developer has chosen to support.   Portable If checked, this module supports importing and exporting of content through the IPortable module interface.   Searchable If checked, this module supports indexing and searching of content through the ISearchable module interface.   Upgradeable If checked, this module executes logic on upgrading through the IUpgradeable module interface. Premium? Premium modules are only available to specific portals  Update    Cancel    Uninstall   Delete Files? Definitions: You can select a Module Definition and optionally delete it using the "Delete Definition" link. Forum     Delete Definition New Definition: You can ceate a new Definition by entereing the name here and clicking the "Add Definition" link     Add Definition Default Cache Time: This is the default Cache Time to be used for this Module Definition. A default cache time of "-1" indicates that the module does not support output caching.     Update Cache Properties   Control Title Source   Forum DesktopModules/Forum/Forum_Container.ascx AvatarManager Avatar Management DesktopModules/Forum/Forum_Avatars.ascx BadWordEdit Edit Filtered Words DesktopModules/Forum/Forum_BadWordEdit.ascx BadWords Manage Filtered Words DesktopModules/Forum/Forum_BadWords.ascx Configuration Forum Configuration DesktopModules/Forum/Forum_Settings.ascx ContentRemoved Content Removed DesktopModules/Forum/Forum_ContentRemoved.ascx EmailAdmin Email Administration DesktopModules/Forum/Forum_EmailAdmin.ascx EmailTemplates Email Template Administration DesktopModules/Forum/Forum_EmailTemplates.ascx ForumAdministration Forum Administration DesktopModules/Forum/Forum_Administration.ascx ForumEdit Edit Forum DesktopModules/Forum/Forum_ForumEdit.ascx ForumManage Manage Forum DesktopModules/Forum/Forum_ForumManage.ascx ForumSearch Search Forum DesktopModules/Forum/Forum_Search.ascx GroupEdit Manage Group DesktopModules/Forum/Forum_GroupEdit.ascx HostEmailTaskAdmin Email Task Admin DesktopModules/Forum/Forum_HostEmailAdmin.ascx MemberList Member List DesktopModules/Forum/Forum_MemberList.ascx PMAdd Send Private Message DesktopModules/Forum/Forum_PMAdd.ascx PMInbox Private Messaging Inbox DesktopModules/Forum/Forum_PMInbox.ascx PMThread Private Discussions DesktopModules/Forum/Forum_PMThread.ascx PostDelete Delete Post DesktopModules/Forum/Forum_PostDelete.ascx PostEdit Edit Post DesktopModules/Forum/Forum_PostEdit.ascx PostModerate Moderate Post DesktopModules/Forum/Forum_PostModerate.ascx PostReport Report Post DesktopModules/Forum/Forum_PostReport.ascx Settings Forum Settings DesktopModules/Forum/Forum_ModuleSettings.ascx StatsRanks Statistics and Rankings DesktopModules/Forum/Forum_StatsRanks.ascx TemplateAdmin Forum Template Administration DesktopModules/Forum/Forum_TemplateAdmin.ascx ThreadMove Move Thread DesktopModules/Forum/Forum_ThreadMove.ascx ThreadSplit Split Thread DesktopModules/Forum/Forum_ThreadSplit.ascx UserManage Manage User DesktopModules/Forum/Forum_UserManage.ascx UserProfile User Profile DesktopModules/Forum/Forum_UserProfile.ascx UserSettings User Settings DesktopModules/Forum/Forum_UserSettings.ascx  Add Control

Is the -1 giving me trouble in the cache setting?  Hadn't noticed that before.  No user can post that doesn't have admin rights.  For several weeks, they could.

The forum general settings:

General Settings Forum Name: Name of this forum module. Display Aggregated Forums: Select whether you would like to provide an aggregated view of threads in all public forums. Enable User Timezones: If checked, users will see the time in their default format based on culture as well as adjusted to their local timezone. You must have the country resource pack installed for users to see in their local format. Enable Thread Status: If checked, users will be able to set thread status if they started the thread.This is good for things like marking posts as an answer. Enable Post Abuse: If checked, users will be able to report each post to moderators/admins using an online interface. Disable HTML Posting: If checked, the rich text editor will not be rendered for posts, instead a multi-line textbox will be used. Date Last Indexed: This is the date the module was last indexed by the framework's search engine. Click the Reset Date link to make all previous posts exposed to search again. 12/30/1899 1:00:00 AM  Reset Date   Forum User Interface Threads Per Page: The number of threads displayed on one page at once. NOTE Per user settings this is overriden. Applicable to unauthenticated users ONLY.  Needs to be numeric! Posts Per Page: The number of posts displayed on one page at once. NOTE Per user settings this is overriden. Applicable to unauthenticated users ONLY.  Needs to be numeric! Theme: The theme used for this forum module. The checkox, if checked, allows users to pick their own theme from the list. Tip Themes are in the Forum\Skins folder. Default Theme Image Extension: Temporary setting to control image extension used in forum theme. Enable PNG Script: If checked, the png javascript fix will be enabled to support transparent png files NOTE This only affects IE 5.5 and IE 6 users. Enable Toolbar Icons: If checked, the forum theme will render icons instead of text links for the navigation toolbar at the top of most forum user interfaces. Display Poster's Location: The selected item determines who sees the posters country of origin. None To Admin Users To All Users   User Settings Member Name Display: This is the format the sites users will appear to users of this forum module. Username Display Name Trust New Users: If checked, all new forum users will be trusted by default. This means they will not require moderation in moderated forums. NOTE This will not update existing users status. It only affects users who have not visited a forum module per portal install. Lock New User Trust Setting: If checked, only administrators and not moderators can change the status of a user's trust level for newly created forum users. NOTE User trust level locking is controlled on a per users basis. Enable User Signatures: If checked, users will be able to add a custom signature to their profile in the forum module. This will display in all posts as well as the users profile.   Enable Moderator Signature Edits: If checked, moderators will be able to update users signatures from the user profile area viewable by all users. Enable HTMLSignatures: If checked, users will be permitted to use HTML code in their signatures.   Community Enable Users Online If checked, displays user online status, overridable by user settings.   Enable Private Messaging: If checked, the forum will allow users to send private messages to one another. Enable Member List: If checked, users will be able to view a list of members of the forum.   Post Attachments Enable File Attachment: If checked, enables users to attach files to forum posts.   RSS Feeds Enable RSS Feeds: Generate RSS feeds for all public forums.   Threads Per Feed: Number of threads displayed per RSS feed.  Needs to be numeric! Time To Live: Time to live is the number of minutes that indicates how long a channel can be cached before refreshing from the source.  Needs to be numeric!   SEO User's Website No Follow: If checked, indicates that the destination of user website hyperlinks SHOULD NOT be afforded any additional weight or ranking by user agents which perform link analysis upon web pages (e.g. search engines). NOTE This applies to user profile page website links as well as user website links in posts. Override Page Title: If checked, the page title set by DotNetNuke will be overriden with the forum name or thread name depending on view.

And what shows up under specific forum settings:

General Information Forum is Enabled: If checked, the forum is open for viewing to all those who can see it and posting for all those who are permitted to post. Group: The name of the Forum Group. NCC Lounge Camaro Discussions Technical Marketplace Forum Name: The name of the forum. Description: A brief description of the forum. Let us know a little about you Created By: The name of the user who created the forum. Date Created: The date this forum was created. (Read Only) Updated By User: The user who updated the forum last. (Read Only) Date Updated: The date this forum was last updated. (Read Only) Enable Polls: If checked, users who have the ability to start a new thread will be able to attach a poll to the thread which all users who can post in the forum can participate in.   General Settings Forum Type: The forum type determines how the forum will function. Normal Normal Forums allow posting, can be private and/or moderated. This is what should normally be chosen. Notification Notification forums function exactly as normal forums but also send an email to all users in roles assigned in the permissions grid to receive notifications. Users cannot unsubscribe from these notifications, so use with caution. Link Link forums redirect users to the designated link assigned by the forum link and usually have no posts or threads. It is possible that a previous forum type was used and the forum does contain threads/posts which are no longer accessible via standard navigation when changed to a link forum. See DotNetNuke forums on the ASP.NET site forums for an example. Normal Forum Notification Forum Link Forum Forum Behavior: The way the forum will function for users. Public Moderated Public Moderated w/ Post Restrictions Public No Moderation Public No Moderation w/ Post Restrictions Private Moderated Private Moderated w/ Post Restrictions Private No Moderation Private No Moderation w/ Post Restrictions Enable Thread Status: If checked, users will have the option to change the status of a thread. Enable Thread Ratings: If checked, users will be able to give each thread a rating in this forum.   View Forum Start Threads Post Replies Moderators Add Attachments Pin Threads Lock Threads Notifications No Moderation Administrators Moderator Registered Users Subscribers Vendors User:    Add * Additional permissions only apply if View permissions are enabled for the corresponding role. Load Permissions of Forum: Selecting a forum will reload the permissions for the above grid. Permissions will be copied from forum and applied to all permissions related settings for this forum. None General Camaro First Generation Second Generation Third Generation Fourth Generation Fifth Generation Engine Tech Driveline Body/Paint Electrical Misc. For Sale Wanted Junkyards Member Intro Open Discussion Event Chatter

Please let me know what I need to fix!!!!!!!  I have several upset users that can no longer start threads and just get error messages.