I'm experiencing the exact same problems with Parallels and OS X.
After installing Parallels Desktop last week (most actual build) my MacBook simply "refused" to shut down or reboot. Even after some "hard" shutdowns (holding down the power button) and reboots I couldn't get rid of the problem. Whether or not Parallels or any VM was running.
After I did some research via Google I removed the Parallels folders from Library/StartupItems and turned the MacBook off (by holding down the power button again). I restarted and without the Parallels-StartupItems my MacBook shuts down and restarts like a charm.
Downside: Parallels stopped working without those StartupItems. Now I can decide wether
a) to have working MacBook which can shut down, reboot and wake up from sleep mode
or
b) to have a working Parallels
Great....
Maybe the developers can take a look into this, it definitely has something to do with those StartupItems.... at least on my MacBook (OS X 10.5.1 and 10.5.2 show the same behaviour).
After installing Parallels Desktop last week (most actual build) my MacBook simply "refused" to shut down or reboot. Even after some "hard" shutdowns (holding down the power button) and reboots I couldn't get rid of the problem. Whether or not Parallels or any VM was running.
After I did some research via Google I removed the Parallels folders from Library/StartupItems and turned the MacBook off (by holding down the power button again). I restarted and without the Parallels-StartupItems my MacBook shuts down and restarts like a charm.
Downside: Parallels stopped working without those StartupItems. Now I can decide wether
a) to have working MacBook which can shut down, reboot and wake up from sleep mode
or
b) to have a working Parallels
Great....