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No one had this problem in 10.5.2 with graphics update 1.0? No one using their mac lappie together with an external monitor? 😱
 
Well, I use a monitor but it's not 1080p. I installed 10.3.5 yesterday and now my MBP won't run in clamshell. I can get the external monitor to mirror the MBP display, but the MBP won't go to sleep when I shut the lid. If I restart it with the lid shut, the MBP display still comes on.

I had this problem before, but it was hardware related and got it fixed. This time I'm 95% sure it's the software because a) it was fine before the update, and b) everything works as it should when I load up bootcamp.
 
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