I work in the IT department at my company and am currently running into a problem that we cannot seem to get under control for one of our users. Here is the deal:
 
When the user is working which involves going and checking some of our internal webpages, sometimes IE6 will give a white screen and not load. If he goes back and closes another browser window it will pull up perfectly fine.
 
Currently he is running on a machine with:
~512Mb RAM
~2.0 Ghz intel
~IE6 (cannot upgrade to IE7 company wide yet so no fix)
~XP SP2
 
What we have done thus far:
~Cleared cookies and cache regularly (ends up he has to do this almost hourly now)
~Upped his user gdi objects and machine gdi objects
~Upped his user handle objects
(The last two were done because of a GDI leak with an internal application that uses IE)
~Upped his cache memory in IE from 256kb to 1Mb (then back since it had no result)
~Wiped his machine and started fresh
~Blown away his domain profile and started fresh
~Set IE to refresh page always
 
Programs running on the machine at any time:
~IE6
~Outlook (based on an exchange server)
~McAfee 8.5 Enterprise
 
Any help would be appreciate because this has stumped our IT department when any other issue seems like nothing. Thanks in advance.