I just purchased a Dell SP2309W for use with my 2006 MacBook (white, 2.0Ghz C2D, 2Gig of RAM). For now I'm using a cheap Dynex mini-DVI to DVI connector. My MacBook has been a bit unstable since I started using the external display (yesterday). I've been having apps crash, issues like it won't go to sleep then it won't wake from sleep. Could it be the cheap Dynex connector or is this display putting too much of a strain on my low-end graphics chip? I'm running it at full resolution (2048 x 1152). This morning I just repaired disk permissions. My CPU temp has been OK, I think the highest I've seen was around 81 when doing a Time Machine backup.