why assume that two or more people will be running wine at the same time? from what i've gathered so far, most ppl have an ubuntu rig, which they have an account for them, another account for their sister/spouse/grandma or whoever. The whole idea is that the other accounts will be able to run their applications without having to access another account /home/~/.wine. we're talking about centralization here! Dont assume that every linux distro is to be run in a multi-user environment and dont assume that it is even running as server!! i think its quite possible if you put restrictions, and warnings and thus allowing one account to run wine at a given time
