FIVELEVEL  I switched from Parallels to VMWARE when they came out with the Beta version. Parallels 3.0 is extremely unstable. I mostly use it to play duplicate bridge online, and Parallels would sometimes quit 10 times in a night. The parallels screen would just vanish, program closed with no warning, no message, just gone. It is worthless.

VMWARE is stable. Infrequently I will lose the connection, but the program does not quit.

The old version of Parallels did not do this, version 3.0 is a piece of crap. I wish someone would start a class action suit so we could get a refund.  
(Version 3.0.5160)