I've had problems like that before....It's nomaly been one of a few things. My virus scan deciding to run in the background. and sometimes it seems to be related to windows update. Even when not actualy downloading anything windows update has caused my computer to run retartedly slow.
On the other hand It's always fixed itself after a restart and I'm assuming your posting cuz it's not working after a restart.
I really don't see why people get so testy over the sheild....I mean It's an ok weapon and all but it's not like it makes you god, or gives you perfect aim. I mean I'd much rather take on someone with a sheild than an awp...
4200> 9600 pro....what you smoken yo
now i'm not saying the 9600 pro is a great card or anything but my 9600 is currently out proforming kemos 4200 in terms of cs