I also am seeing this problem. I have been using Fusion 1.1.3, and really like it, but would like to upgrade to the new version to get some of the new features, especially the printer support for the printers on the Mac. In Fusion, I am running Windows XP Pro with SP3, using 1 CPU and 1GB of RAM on a MacBook Air running Mac OS X 10.5.6. I typically use either single window or full screen mode, not unity mode.
Version 1.1.3 works just fine (as good as Windows works anyway!). I tried switching to version 2.0 when it came out but quickly decided it was not yet ready for prime time. I saw with interest that a version 2.01 had been released, and had great hopes that it would work for me. However, after spending the better part of a day trying to get it to work, I have given up and gone back to version 1.1.3.
The problem I have is this one -- vmwareuser.exe consumes the CPU and everything runs way too slow. This occurs without really running anything. I tried uninstalling and reinstalling vmware tools as was suggested in one comment, but could not get the tools to reinstall successfully. I finally just gave up since I couldn't devote any more time to the issue.
From the looks of the number of "views" on this topic, it looks like it is being experienced by MANY users -- I therefore remain hopeful that VMWare will figure out the problem and fix it in a 2.02 release. Soon would be nice!
Ken