nVidia Display Driver Stopped Responding

Specs:

OS Name Microsoft® Windows Vista™ Ultimate
Version 6.0.6000 Build 6000
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Type x64-based PC
Processor AMD Athlon(tm) 64 FX-55 Processor, 2613 Mhz, 1 Core(s), 1 Logical
Processor(s)
BIOS Version/Date Phoenix Technologies, LTD ASUS A8N-SLI DELUXE ACPI BIOS
Revision 1013, 7/26/2005
Total Physical Memory 2,046.94 MB
Available Physical Memory 874.35 MB
Total Virtual Memory 4.21 GB
Available Virtual Memory 2.76 GB
Motherboard ASUS A8N-SLI Deluxe
Adapter Description NVIDIA GeForce 7800 GT
Adapter RAM 256.00 MB (268,435,456 bytes)
Installed Drivers nvd3dum,nvd3dumx.dll,nvwgf2um,nvwgf2umx.dll
Driver Version 7.15.11.5818

Problem:

Occasionally when I boot my system my dual monitors dim for a second and I
get the message in my system tray that says:

Display driver stopped responding and has recovered.

Display driver nvlddmkm stopped responding and has successfully recovered.
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Anbody else having this problem?

Any solutions?

Any Suggestions?

Thanks,

Mike