I've had this circle with a slash on startup on several boot ups. I've tried Disk Repair and then finally coming to the point [last night] to completely reinstalling OSX from a clean format and install. Once OSX was installed it gave me the opportunity to use Time Machine which I did. Everything installed and was put back like I had wanted using Time Machine. I was very please with how automated it was and how it seemed to get everything back in its place. Well everything was installed and I then went in and did the Mac software updates. Which I did all of them that DID NOT require a restart first. Once those were installed I did each of the software updates that required a restart [one at a time] to insure that each one of them was successfully done and if I did have a problem as I did with a previous update. I would know about where my problem was [hopefully]. My last 2 software updates were the OSX 10.5.7 update and the iLife 09 update. Both of them required restarts and were done one at a time and they seemed to be installed correctly without any hiccups. Last night everything was running smoothly before I went to bed and was extremely happy that [me being a new Mac owner] was able to learn and install everything like I knew what I was doing. One thing I can say that before I went to bed I was playing with importing my photos into iPhoto 09 and ever since installing that program, I had some spinning beach balls quite a few times in the very, very short time I had the program installed. Is iLife '09 problematic? Because I seemed to remember that everything seemed fine in my original install until iLife 09 and the iLife 09 software update was done and then the problems arose from these. This morning I turned on my laptop and what do ya know the circle with a slash in it!!!! I'm lost as to what's going on. I just bought this laptop 5-6 days ago and seem to have this problem since day 2 or 3. Can someone aid me with what might possibly be going on?