My old A4000T had a thing about cold. If it was started and the temp was below freezing or just about it wouldn't boot up when I turned on the power, instead it would have to sit there in it's none booting state for a about a min and then I softresetted it and then it would bootup. 
I've had and actually have that problem aswell, but I've so far been spared of worse problems than that. I think my problems began when I installed a SCSI disc... Anyway, we're not supposed to talk about my problems, and I don't think that's the same problem as is mentioned in the original post.