This beta has been for the most part very good, at least for me. I am very pleased and cudos to the VMware team.
I decided to use Unity all day as a test and intentionally leave it on over night with MS Word 2003 minimized in my doc. Well when I logged back in the next morning - Word was open on my desktop. Not certain why and I would like to pass this information on to VMW and anyone else that may have had this problem.
Overall, I am not having any material problems using Unity on my iMac Core Duo 2GHz with XP Pro 32. As far as I can tell, system resources are stable (not necessarily like Parallels 3). Very pleased end user here and cudos again to the VMware team.
