FX5900Ultra - DVI connection not resuming from standby
 

I have the following problem:
I have a dual monitor setup on my MSI FX 5900Ultra videocard : a LCD monitor
connected on the DVI connection, and a CRT monitor on the VGA connection.
When resuming from standby, the VGA connection resumes OK, but the DVI
connection remains dead.
I'm running XP Pro SP1. Mobo is an ABIT IC7-MAX3. Using the MSI nVidia
drivers 45.33.

Any ideas what the problem may be?
Thx,
Chris.