I'm having the same problem and only from google.  I'm going to attempt the Disallow method.... did you have any success?

I have just recently upgraded to DNN 4.4 and since the upgrade, these errors are being logged.

Also, just to note that the error is logged as being Portal ID -1, (default?) but the actual website's portal ID is 21.

Thanks for the help!

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Andrew Walker

If you enjoy making your own beer and/or wine - be sure to check out http://www.ForemostBrewing.com

I am still getting these errors:

Page Load Exception

AssemblyVersion: 04.06.02
PortalID: 1
PortalName: Chetco Cove Yacht Club
UserID: -1
UserName:
ActiveTabID: 57
ActiveTabName: Forums
RawURL: /Forums/tabid/57/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.chetcocyc.org/Forums/tabid/57/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 44a8bd5b-77b9-4d9c-a648-3a310c15731a
InnerException: The state information is invalid for this page and might be corrupted.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Convert.FromBase64String
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: The state information is invalid for this page and might be corrupted. ---> System.Web.HttpException: The state information is invalid for this page and might be corrupted. ---> System.Web.UI.ViewStateException: Invalid viewstate. Client IP: 205.188.242.8 Port: 25964 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322) ViewState: /wEPDwUJMjgzMDU3ODk3D2QWBmYPFgIeBFRleHQFPjwhRE9DVFlQRSBIVE1MIFBVQkxJQyAiLS8vVzNDLy9EVEQgSFRNTCA0LjAgVHJhbnNpdGlvbmFsLy9FTiI 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... ---> System.FormatException: Invalid length for a Base-64 char array. at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load() --- End of inner exception stack trace --- --- End of inner exception stack trace --- at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

and General Exception:

AssemblyVersion: 04.06.02
PortalID: 1
PortalName: Chetco Cove Yacht Club
UserID: -1
UserName:
ActiveTabID: 57
ActiveTabName: Forums
RawURL: /Forums/tabid/57/forumid/-1/scope/threads/currentpage/158/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: f8af0f6f-2fc2-4f13-bce5-74d15f5536b5
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Modules.Forum.Utils.TrimString
StackTrace:
Message: System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.Forum.Utils.TrimString(String Content, Int32 CharCount) at DotNetNuke.Modules.Forum.Utils.BreadCrumbs(Int32 TabID, Int32 ModuleID, ForumScope Scope, Object InfoObject, Config ForumConfig, Boolean ChildGroupView)

Help!  :)

Thanks

Ken