When I go to select verts and drag the mouse maya seems to be lagging pretty badly now more than it ever has before, a fresh reboot didn't make any difference.

My CPU Usage in the task manager gets up to about 60%

I have 2gb ram and a quadro fx3450 graphics card, and I've never had this problem before

Any help or ideas would be greatly appreciated since this isn't making it an enjoyable time to model.