There is a new build of Parallels Desktop out for Mac Pro/iMac Core 2 Duo owners.
From the Parallels Forums:
We are continuing our efforts to deliver a Parallels Desktop for Mac version that fully supports Mac Pro and iMac Core 2 Duo.
There’s an updated internal build that is available for early testing which can be downloaded from here (see thread).
Please don’t forget to backup any sensitive data on your Mac before proceeding to evaluation.
This version introduces a number of important fixes:
* VM crash on restart on huge memory MacPros in VT-x mode.
* Several VMs simultaneous work.
* Win98 guest 100% CPU usage
* WinNT not being able to start fix
* Several other fixes
We’re still extremely interested in your feedback about this build and any issues you might face.