They’ve just made available a new Parallels Desktop build for Mac Pro/iMac Core 2 Duo users, that includes support for Microsoft Windows Vista:
We have just made available a new build (1898) for Desktop for Mac that substantially improves Mac Pro and 64-bit iMac performance and eliminates kernel panics and major bugs.
For those users who have Mac Pros and 64-bit iMacs with more than 2GB of RAM, you’ve had to manually limit your RAM via the command line in Terminal. In this build, we’ve included a tool that will help you take this action without any command line coding. With a single click you can limit your RAM and make your Mac Pro fully compatible with this build. You can easily revert your memory back at any time to the full configuration with the same tool.
NOTE: Its very important to note that limiting your RAM configuration to run Parallels Desktop will NOT prevent you from running any other OS X application (although they may run slightly slower). It simply helps our hypervisor “play nice” with the Mac Pro.
Originally, I told you that we’d have full PAE support by year’s end. Now, I’m pleased to let you know that we are working on a new RC version that will be compatible with ANY Mac with ANY amount of RAM, and will have it much sooner than originally anticipated. The engineering team tells me that this build should be available in a week or two.
This build also adds support for Windows Vista RC1 as a guest OS, and adds an improved Parallels Tools package for all of the Vista builds that improves mouse movement, and video resolutions, and beefs up networking.
Thank you again to all of our loyal Desktop users and beta testers. Everyone here appreciates your feedback and your patience.
More information can be found in this thread.
It can be downloaded from here.