I recently setup a 2 video card system:Vista 32, 4GB Ram with OOM fixes installedMain 8800 GTS 640MBSecond 7600 256MBAfter a boot into Vista I'm now showing over 1GB of memory in use looking at the memory graph in Windows Task Manager's performance tab. That seems very high?Funny thing is if I look in the Process tab, I dont see anything that is using even close to that much memory. If your using Vista and 2 video cards can you report your memory useage as shown in Task Manager / Performance and your video card setup....

Just to compare, booting the same system in to XP ... 224MB memory use reported.Could the problem be some of the recent Vista MS OOM fixes?I've tried to stick with Vista despite the loss of 5-10% framerate in FSX, and the many hassles with security. With this now, 1Gb vs 224MB or memory being used doing nothing, I'm looking at just switching back to XP as my main O/S.

Not sure why that amount of physical memory use is a problem for you. You have more memory than Vista can possibly address in 32 bit form.The fix was to cure the excessive use of addresses which caused the OOM problem.