Sounds like hardware or driver issues, depending on the Mac.
its not a hardware problem. look @

with this many people having the same problem there is not a way that

i think a huge problem was stupid


THERE IS NOT AN EXCUSE IN THE WORLD FOR THIS

this is NOT APPLES STYLE and it a joke and insult to us all
these arent just small bugs that a couple people might sometime get. these are HUGE bugs that make leopard 101% unusable. this is NOT A BETA PROGRAM. we bought version 1.0. that should work very good for a big company with 2 years worth of work that show very little progress in so many areas and even more disappointing is that they TOOK AWAY perfectly good things that couldve been untouched and made leopard SOOOOOOO much better. they took them away for no good reason & it sucks bad