ashley's dashboard

I experience this problem intermittently myself. About once a week my Macbook has trouble coming out of sleep mode. The password dialog never appears and the only way to get it to appear is to close the lid and reopen it. Once I've done that, the screensaver simply stoa working, whether I try to activate it via the hot corner or by waiting the set amount of time. I've triple-checked my settings and am positive they are working as 90% of the time things are fine and a reboot always fixed this when it does happen. It's very frustrating!

Check your System Prefs to make sure don't have the Energy Saver settings set to "Never" when you have it plugged in or running on battery power. This is one thing to check when the screen saver is not working properly. Also check the Screen Saver start slider (sys. prefs/desktop & screensaver) isn't set to never.

I have the same problem. The "Start Screensaver" hot corner doesn't work no matter what corner you put it in.