Vista is not at all Developer friendly and popups too many message box before allowing the files to be put into System Drive
Same thing is also in Linux if you are not a root user.You will not be allowed to do anything in root folder or any other administrative task. More over, this time Microsoft tried Linux way to control virus attacks on OS using User Account Control in which it asks for everything you do with OS. If it irritates you, you can just disable it from control panel and it will not bother you again by giving you messages or popups.
lolz defo vista iz just eye candy! i had it for few months and then i got back on XP, still got Vista ultimate but neva use it.... tis shit 100% agreed wiv shamvil