In a Sharepoint web page I am having a problem identifying the logged in user!
The Masterpage contains a normal ootb control that displays the username
<%@ Register TagPrefix="wssuc" TagName="Welcome" Src="~/_controltemplates/Welcome.ascx" %>
.....
.....
<wssuc:Welcome id="explitLogout" runat="server" />
This always displayed the correct logged on user.
However if I call
HttpContext.Current.User.Identity.Name
from within a webpart then In 1 or 2 % of cases I will get the incorrect name returned.
This gives me a page that will have the correct username at the top, and the incorrect one in the webpart. Other methods of getting the name in the webpart return the same incorrect name. If the name checker webpart is on the same page multiple times then very rarely the second copy of the webpart will have the correct name or a third incorrect identity!
The identities are stored in Active Directory, and the users authenticate against and ISA server, users are not on the same domain as the SharePoint infrastructure. The sharepoint farm is rather complex with the ISA servers, four web front ends, an apps server and finally a database server.
Has anyone had this happen before? or have any clue as to the direction I should take to investigate the problem!
The servers are running IIS6 on server 2003. Sharepoint is at SP2 but without the latest bunch of patches.
Additional: Output Cache is enabled. Authenticated Cache Profile is "Intranet" The settings for that profile are as follows
Title Intranet (Collaboration Site)
Display Name (BLANK)
Display Description Optimized for collaboration sites where authoring, web part cusomization, and minor version are enabled.
Perform ACL Check Yes
Enabled Yes
Duration 180
Check for Changes Yes
Vary by Custom Parameter (BLANK)
Vary by HTTP Header Browser
Vary by Query String Parameters (BLANK)
Vary by User Rights Yes
Cacheability ServerAndPrivate
Safe for Authenticated Use Yes
Allow writers to view cached content (BLANK)