So, my Macbook's screensaver is on. I go to get on it, and it asks me for my password like normal. I type it in, it says it's wrong. I do this like 3 or 4 times, until it says I've done it too many times. I even checked the CAPS LOCK key, and it was off, but I tried it with it on once. Anyways, I hold the power button down, and turn my MB back on. I login...but none of my icons in the top right of my screen show up (except the spotlight eyeglass thing and Xbox Connect). I can't connect to the internet. I can't open network settings. (It opens, but immediately freezes). I restart the computer. Same thing happens again. I then unplug the power adapter and all USB devices (KB/mouse and printer) and shut the MB down for about 15 minutes. I turn it on, and now it works fine. What happened, and should I be worried? Thanks.