Vista Memory Allocation Error Help!

[:.:.:]

Whenever I'm playing Team Fortress 2 and there is a map change, the game crashes and I get booted to the desktop with the following error:

Specs:
Intel Core 2 Quad Q6600 2.4GHz
ASUS Maximus Formula SE
eVGA NVIDIA GeForce 9800GX2
Auzentech X-Fi Prelude
OCZ Reaper HPC 8GB PC2 8500
Samsung 500GB SATA HDD x 2
Western Digital Raptor 150GB x 2 RAID 0
Cooler Master 850w PSU
Windows Vista Ultimate SP1 x64

Google results show other people experiencing this issue which is acknowledged by Valve and supposedly resolved by Microsoft via a patch. However, this patch is now included in SP1 yet I still get this error. Anyone have any suggestions or does it look like I have to venture to WindowsXP x64?

 

[silent-circuit]

Did you get the patch and test to make sure it did not install anyway? If not do that.

Also try disabling superfetch (Google it) just to test. That will keep Vista from filling so much of your RAM with cache and may free up the necessary bits.