So I've been playing with IS:WindowSnapper tonight and it's pretty damn amazing, I'll be converting my entire system over to IS before Lich King releases.

The swap between windows in shattrah from 400x250 to 1680x1050 instantly... the slowest it swapped was 28ms, the average I was getting was 5ms, fastest was 2ms...

No grainy graphics, no client lag, no hitch, hickup, burp, etc.

The scripts I wrote up are far from ready for prime time, but I'll be working on getting my setup polished out and within a month or so expect to see what I've taken from Lax (tons of help!) and worked into my config... Right now I can box between 2 and 8, and I'll be working on a bit of fancy math to make that scale outwards.

System Spec's:
AMD Phenom 9600 (Quad core, 2.3ghz w/TLB Erratta disabled)
4GB Ram
8800GT video card
WoW running from a SATA 3.0 500GB drive, symlinked folder.