Loud squeal at low RPMs

I have a 1999 Mazda 626 4 cyl. With 116k on it. There was a squealing noise at low RPMs (start up and at stop lights). The Alternator belt came off. I have replaced both belts with the correct ones. I have adjusted the belts to have little deflection. The squealling has yet to stop. I have re-adjusted to ensure I was not too tight or too loose. It doesn't matter either way. Could this be a symptom of my power steering pump going bad. Are there bearings in the power steering pump? I really don't want to replace parts here and there that don't need to be replaced. Please help me in this embarassing situation. Thanks in advance.