Quad-core 2.2, 8 Gb, XP Pro x64 OS, SSD drive for data cache here.

Dalaran works for me (i.e. no crashes and I can get around) but is VERY painful. 5-10 fps and moveing in small chunks to prevent follower dropoff FTW.

Been thinking about trying hardware boxing, seems like 5 very cheap crappy PCs would do pretty well with WoW actually, But i have a 2 monitor setup and don't really want to go 5 screens, even crappy ones.