Ok so after I installed ClearDock, it reccommended I restart ... so i did. I was greeted by a grey screen and a blinking LED. It blinked three times, then paused, the three times, then paused until I shut it down. I tried zapping pram but to no avail, nor could I select XP Pro as my boot disc by holding down "option". I let it sit for a few minutes, the restarted and It booted fine! Then I restarted after AppZapping ClearDock, and got the grey screen and blinking LED again. I let it sit, then It worked fine. What does this mean? What can I do to fix it? Do I need to take it to the Aple Store?