So let me give you a little timeline: - for the last 6 months it has been running slow and frequently gets the spinning beach ball - 3 weeks ago I noticed I had very little of the stock 4gb of memory available so I ordered the 8gb upgrade kit from crucial - after installing the new memory it was like a new machine. Life was good. No more spinning ball, ever. -last night I opened it and it was frozen on the login screen. I could move the mouse pointer but not actually click anything. I did a hard restart by holding down the power button. The flashing folder screen appears. - I tried to do a network recovery which I found out how to do on apples support site. I could click on any of the recovery options but couldn't finish them because it wasn't seeing the "Macintosh HD" (stock 320gb hdd). So I'm thinking crashed drive? - I saw a posting online that it could be the cable connecting the hdd so I removed the back of the case, unplugged and then replugged the hdd cable. Hit power and still see the flashing folder screen. - I'm getting ready to call apple support and go to turn it on again. IT'S WORKING!!!! I'm able to log in and do the disk check. It says the disk looks good. Within 5-10 minutes I get the spinning beach ball and it is unresponsive. I power it down with the power button and when it powers up I get the flashing folder screen again. - I've got an appointment today at the Genius Bar Anyone got any ideas? Is my hard drive gone?