Game Menu Lag/delay?

[FuzzlePuf]

After i installed the patch 1.5, the game menu seems to have died on me, it takes around 2 mins to process my click and go to that menu, but my mouse can move smoothly round the screen, ive tried finding out what it was on google, but googles failed me and i cant find anything to fix the probem apart from some dude saying reinstalling the patch and the game wont fix it. Any ideas would be appreciated.

[FuzzlePuf]

Forgot to mention that if i actually manage to get into a game, it runs smoothy and fine.