I use a Satellite L305, and I have two rather aggravating problems:
1) The first time I went into Standby Mode, I could not come out of it. The second time, the computer restarted when it came out of Standby.
2) Sometimes, when I lock the screen, I cannot come out of it. (I should point out, although I don't think it matters, that I had Folding@Home running at the time.)