Jeremy, thanks for your reply,
The system was also built 6 weeks ago so it should be clean. The key temperatures are very good for this machine.
Sometimes Vegas locks up before I add footage or even generated media. I am beginning to suspect Windows update did something.
I installed 9.0c(64) on a virtual machine and had similar results, I did however get an error message:
Problem Description
Application Name: Vegas Pro
Application Version: Version 9.0c (Build 895) 64-bit
Problem: Unmanaged Exception (0xc0000005)
Fault Module: C:\Program Files\Sony\Vegas Pro 9.0\vegas90k.dll
Fault Address: 0x00000001801CBA88
Fault Offset: 0x00000000001CBA88
Fault Process Details
Process Path: C:\Program Files\Sony\Vegas Pro 9.0\vegas90.exe
Process Version: Version 9.0c (Build 895) 64-bit
Process Description: Vegas Pro
Process Image Date: 2009-10-26 (Mon Oct 26) 16:34:26
I have created a dump in task manager and will be going over it sometime later. Until then, or a genius fix from someone on this board, I will be using 32 bit.
Any other help is very welcome,
Jeff