Hey there, I have been having this annoying problem with Leopard. I have a 2.4 Ghz MBP (4 GB Ram, 160 GB HD, 256 mv video) with 10.5.1 after erase-and-install. I have had this problem since immediately after installing (i.e. it didn't crop up after installing any programs). When I restart the computer or shut it down, it will go through it's normal thing, the screen will dim then go black. But, instead of immediately restarting, it will sit with the screen turned off for 10-20 seconds (with the white power indicator on solid white). Then the Mac chime will sound and it will continue restarting. This is really annoying. Is there any log or something I can check to see what is going on, or what is causing the delay? Any one experience this or offer a fix? Are there any settings that I could reset? I have repaired the disk and repaired permissions through "Disk Utility" with no change. Thanks so much!