I do not think the RAM is the problem as I run 5 with no issues with 2GB.. (Its some nice n fast DDR3 but its still only 2GB as its water cooled and only 2 fit in my system XD)

In the rewrite however I did remove the fact that I was screwing around with the FPS of my screens last night and found that dropping the background ones to even 10fps could make the slaves reactions a little slugish.. That was in response speed though not FPS so I doubt that will mean much...

Umm, here is a thead about system links for Vista/Win7 people but it also goes on to explain XP and such, YOu need to read a bit of it as the first post is great, but it doesnt contain all the info (I use Win7 and I had to alter the script to know where WoW really was for instance)

This all might clear up when you get your new card back from being RMA'd