I was using my mac at the kitchen table yesterday and didn't notice that the ac had become dislodged from the plug in.. and when I went to shut down last night, noticed the battery icon/indicator was marked in red... either really low or drained. Don't know which. Today I went to log in, and it's rejecting both accounts. Won't accept login passwords. Also, the icon picture for the second account is missing. Did I mess something up badly? Why can't I log on now? Why is it not accepting my passwords? Does running the battery down too far screw things up like this? ACK !!!