Hi Paul, I was thinking that a clean install might be better as you appear to already have asked a number of questions about problems with your system since the upgrade. You can spend a heap of time trying to isolate where the problem is, whereas a clean install gives you a great base to start from. I usually clean install, upgrade to the latest software via software update and then go testing before installing too much software. Hope this helps, cjc On 25/06/2011, at 7:44 PM, Paul Moortgat wrote: > No. An upgrade. But now I found out that I'll have that problem when I use the keys opt-com-open dvd but not when I select the option under the apple (top left corner) > > Paul Moortgat > > > On 25 Jun 2011, at 02:54, Christopher Collins wrote: > >> Did you do a clean installation Paul? >> >> That would be my first thought. >> >> Backup your data. Wipe the disk. Clean install SL. >> >> That should clear all of your problems. >> >> cjc >> >> On 25/06/2011, at 7:55 AM, Paul Moortgat wrote: >> >>> Now with the new SL system my Mac Pro wakes up each time I put the Mac to sleep. Shut down is the only solution. Any idea? >>> >>> Paul Moortgat