I'll never be too high with my pie (oh how poetic) but today it's been running for about 6-7 hours non stop. Should be a decent total.
I live on this PC, so tomorrow will be gaming day - no crunching
t_ski is unassailable!
EDIT: just to add to Norton post above. I've had random shutdown's while running BOINC. Just had one there. These only started after i started crunching so my 4.2 GHz cpu overlock must be marginally unstable or the gpu clocks are (but they're factory overclocked at 1050 and 1010).