Not for me here, see I play in window mode, so I just press x and it exits. Without going thru the lagging screen of tallying up all of the scores... But what I find annoying is that when you load up a game with a mod on, it runs smoothly for the first few seconds that it would lag like hell...and then it is all smooth again...but then again it probably because the game is applying the mod when it lag...
but sadly even if I exit via the x, my comp will lag until till it unloads...