Windows XP SP3 machine. The application goes white after approx. 2 hours. If you move the mouse it comes back up within 10-30 seconds. Sometimes a few objects show first, and then the whole screen comes back. If you minimize the application window when still white, the desktop view is normal. If the application window is kept minimized the screen never goes white. So I've been able to narrow it down to only this specific application going white after approx. 2 hours. Screensaver and power savings are all turned off.
HP Compaq dx2450
AMD Athlon Dual Core
1.87 GB RAM
All drivers and software updated
Application event log doesn't show any errors
System shows one DCOM error 10005 which is unrelated.
Any ideas? Thanks!