When hitting one of the DNN's maximize buttons, the page refreshes and reverts back to minimize. This is a huge problem if anyone knows what's going on? It only happens on a few of my websites I upgraded.

Yes I've restarted, recycled the app pool, and rebooted for that matter. I just expanded my test and it happens on all dotnetnuke websites running 4.5.3 and IE 7.0. Actually hardly anything works in IE... seems to be anything related to AJAX. I can no longer get to settings. The control panel won't expand without a few clicks. It just refreshes the page. This happens on several computers in IE. Doesn't seem to happen in FireFox, that's why I haven't noticed it. Can I turn off AJAX in DNN?

Once I got this error:

AssemblyVersion: 04.05.03
PortalID: 0
PortalName: Acarté Technology Services
UserID: 8
UserName: Jason Honingford
ActiveTabID: 36
ActiveTabName: Home
RawURL: /Home/tabid/36/ctl/Tab/action/edit/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://acarte.com/Home/tabid/36/ctl/Tab/action/edit/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: c256a3b8-1ec5-4944-93d7-cadbd0fda80d
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Security.Permissions.Controls.TabPermissionsGrid.GetUsers
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Security.Permissions.Controls.TabPermissionsGrid.GetUsers() at DotNetNuke.Security.Permissions.Controls.PermissionsGrid.CreateChildControls() at System.Web.UI.Control.EnsureChildControls() at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Page.FindControl(String id) at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source:
Server Name: SERVERXXX

Problem Identified! This is crazy! Thanks goes to BitComet for helping me waste an afternoon on this! :P

It appears I had an IE "AddOn" installed using: BitCometBHO_1.1.5.19.dll

Apparently it was intercepting the AJAX and refreshing the page. But never fear, those using BitComet only need to download the newest version and it will install an updated DLL correcting the problem.

Case closed!