Hi Ristar,
Have you sorted this problem? I have the same issue with killing Counter-Strike on my vista. And it's so annoying!

Have to reset my hardware to sort this out.
Does anyone have the same problem? MS guys have you heard about that?
Thanks,
Ivan
PS has found link on the reported issue, please press "I Agree" to vote for it
http://windowshelp.microsoft.com/com....vista.general 
Quote: Originally Posted by
Ristar
Hi,
how do i kill a process that froze? ie. Firefox, IE, and all that, that are
not responding?
so far, i have tried "taskkill /im <pid>", and process explorer.
taskkill always returns a message telling me that a kill command has been
sent, but the process is still not killed.
process explorer, no matter how many times i try killing it, the process
still wont be killed.
seriously, this inability to kill processes that are frozen is getting
really, really irritating.