MAC frightens me again

I was in the middle of some important work,  and was also completing the last edits to my blog when this screen freezed my huge monitor. It asked me to restart my system. And all the attempts of saving my work before hitting the power button failed. Frustrated, I went for the power button, with no hopes of getting my work back. But to my surprise, after the restart, everything was saved for me. 🙂

Thanks Mr. Jobs, but I thought it would be a good idea to let the user know why exactly the computer wants to shut down.  Weird though, I never found out why did it want to restart.

Update: This has been happening very frequently of late. I noticed that whenever my phone (HTC Hero) is kept connected to my Mac, it either refuses to start or I get this “Restart” screen. Seems the rivalry between Apple and Google have just taken it to new levels. Bad for me 🙁 . 

The apple site says this :