I have an asp.net 2.0 application using the report viewer control.

I am NOT using windows authentication.  In my web.config file, I have a
userName and Password for an activeDirectory user that has accces to our
reporting services server (actually, I am using my own username and password
for testing right now to avoid one less "item" in this equation).  I create
a Credentials object and assign it to the report viewer like this...
IReportServerCredentials irsc = new
CustomReportCredentials(UserFromConfigFile, PasswordFromConfigFile,
ReportDomainFromConfigFile);
ReportViewer.ServerReport.ReportServerCredentials = irsc;

And these are my other properties for the report viewer...

ReportViewer.ProcessingMode = ProcessingMode.Remote;
ReportViewer.ShowCredentialPrompts = true;
ReportViewer.ShowExportControls = true;
ReportViewer.ServerReport.ReportPath =
string.Concat(ReportPathFromConfigFile, "ReportName");
ReportViewer.ServerReport.ReportServerUrl = new
Uri(ReportServerUrlFromConfigFile);

I have a simple report that will run for me EVERYTIME when I go directly to
the reporting services server to view the report.

IF I have viewed the report on the RS server, then in my web application it
will display... If I wait 10 minutes or so, I get the following error when I
try to view the report via my web application.

ERROR:
An error has occurred during report processing.
Cannot create a connection to data source
'TransactionServer.CFApp_Management'.
Login failed for user '(null)'. Reason: Not associated with a trusted SQL
Server connection.

IF I go back and view the report on the RS server again, the report on my
web application is displayed again without an error once I refresh the web
page in my web application.

It seems like there is some caching or something going on, but I have no
idea and am at a loss!

Please help, thanks in advance!

Brian