i'm trying to work out exactly where UAC is a security feature?if a virus exploits some loophole and installs itself without being prompted then it doesn't help? if it pretends its something useful and some dopey user visiting some site says yes to what the site asks to install in the first instance, then they'll just say yes the second time too?
its nothing to do with security, its just, originally "do you want to install this", now you've got "are you really bloody sure about it"? its not, "are you really sure as i'm some kind of security application and i've detected this might be bad software or a virus", its just pressing a button once again.
as someone said in some thread, you know, somewhere, its simply a feature to add extra accountability onto the user. some idiot installs a virus because they are too stupid to know that software wanting to install from the pron site to know whats going on, they bitch to their ISP, their mother and M$ when they lose some important work because they have to reinstall. now M$ can say, but, we asked you twice if you wanted to install, you said yes TWICE< its your fault you stupid tit.
Security to me, is embedded routines to actively find and remove malicious software, or to prevent unauthorised installation of malicious software without your knowledge. UAC isn't security at all.
on old windows you could simply password an admin account, give a stupid parent, or client, or whoever simply access without the ability to do anything except use already installed applications. you can still do that, if you do it right there is no need for UAC at all, ever.
EDIT:- i guess the other way i'd expect improved security to work would be better code thats not as exploitable in the first place. but unlike most people i can understand that windows is far more widely used in a home setting, and those people are the biggest targets for virus makers, so if most people trying to write virus's are all going after windows more exploits will be found. linux i don't believe is safer, or OSX or anything else, windows is simply attacked more often by more people.
is there much of anything vista can do for me that XP couldn't? not in the slightest, is there that much honestly that win xp, functionality wise, improved over ME, no i still use computers in almost identical way with identical programs. however win xp for me brought about computing with next no crashes ever. Win ME/98/95 were pretty poor, win me i have to say was close to fine by the end of using it with rare crashes. but before Win XP there wasn't the real possibility of a year's uptime, it was just 100x's more stable, biggest improvement ever in the windows evolution. vista for me brings prettyness and very little functionality for me. not used search, don't use sidebar properly though i have it open and a clock up there, but mainly because it looks nice.