I thought I would update this and say that the problem was fixed by the PA tech. The problem went away when he forced the Store Planning department to take the heater off of the power management system that they had said they had did two months before when they actually hadn't. Why the Unix tower and drives were the main thing affected, I'm not sure. I guess it was more susceptible to electrical interference than anything else. Yesterday I was thanked by the top dog in the Field Technical group for my hard work and dedication at that store. Life has finally gone back to more normal working hours and the constant stress and worry went away.