I take a breather, have a sip of water and return to my keyboard.
This is why you buy good PCs, Kiddies.
95%+ of compiles i run are over in 2 minutes so its a good time to continue a steam conversaion or forum browsing or map uploading or whatever really
Exactly, a compile of a late beta map takes me about 10 minutes on a 1/1 and a half year old computer. I take the oppotunity to go to the toilet, get myself a drink, check my emails. Dual core has allowed me to compile and do other stuff at the same time, like watch an episode of family guy off mega video. By the time i'm finished, the bsp is waiting for me, not the other way around.