Hi, I have enabled the prompt for a password when waking from screensaver and this works fine as long as I respond to the password prompt quickly. However, if I don't respond fairly quickly then the password prompt disappears leaving a black screen with just the mouse pointer visible. No matter what I type I can't bring the password prompt back up and therefore can't gain access. The only way I can do this is to press the power button and wait for 5 minutes or so before bringing it back out of sleep and typing my password more quickly. The machine is a new iMac 2.4G 24" if that makes any difference. All latest updates applied. Any ideas? Cheers, Craig.