power management -- password on standby resume

[rks]

I have 3-4 power management policies (and checked in the register where there are only about that many). One is for working on AC, at home where I don't need to lock access when it goes into standby. However, it won't do that. I've unchecked the "password on standby resume" in both Windows (Vista) and Thinkvantage. How do I make it work?
Also, I find that the power management works poorly. When plugged in it never goes to sleep -- i.e., beyond the screen saver. I keep the BIOS, etc up to date, etc, and it still does not work properly.

rks