Odd issue when swapping w/ isboxer

[Sildenafil]

Hey all,

I put together my new PC and set up WoW x 5 with isboxer. Having an odd issue when I swap windows:

Using GTX 580, SSD, 12Gb ram (6 x 2 gb), ASUS x58 sabertooth

2 x monitors (not identical screen size)

When I've got all 5 toons loaded up, main on the big monitor, 4 slaves on the smaller one, usually when I switch windows, it swaps without issue, no problem. However, it's having issues where all of a sudden I will switch, and the window I switch to will start flickering with multi-colors around the edges. I can still see the game and it functions, just with flickering. The flickering will either resolve itself or go away after I repeatedly swap a few times.

2nd swapping issue I noticed is, I swapped windows, and instead of flickering, I get a black window, then when I try to swap back, the original window goes black.. then WoW crashes on those accounts and I get the "cannot read...." wow system crash error.

Anybody had this sort of problem and know where I should start troubleshooting? My first thought is RAM issue since the WoW crash pop-up refers to a reading problem, but I didn't write down the message. I'll write it down next time it happens.

*edit* I found a similar thread below with a similar issue but no definitive answer. Anybody figure this out yet?