First...I don't have Vista installed as a dual-boot (or otherwise) and I don't even know if it is compatible with Vista.http://www.google.com/search?hl=en&q=P...mp;aq=f&oq=
I've used some version of PM for about 10 years...it works best when users ask it to perform one operation at a time, even though it appears that you can have it perform several operations at once.
So...if I want to delete one partition or resize one AND resize a different partition...I do that in 2 steps. I delete the partition I want eliminate or decrease the size of the one which I want to reduce. Once PM has rebooted from that...and then XP may demand another reboot...I then resize the second partition.