I can't justify getting more hardware (I recently got a 7950), and with mining rewards going down, down, down, and the difficulty soon to rise, it looks like I'm soon going to have to give up mining before I even get to 5 forum posts mark 

Hi - I'm using Guiminer (with 2 miners), on Slush's pool, and I would like to know if there is a "best time" to stop mining (e.g. for a reboot) ?

-Tom