Hi everyone, I am posting here for the first time. I had trouble on my laptop yesterday for some reason while i was working on something the laptop became slow so i restarted it. It took at least ten minutes to restart and while resterting there was a wheel below the apple logo and status bar. I know it is diagnosing something so when it finally entered into the desktop now half my applications arent working properly e.g. firefox, photoshop and i had to reinstall several apps to make them work again. Also it freezes a lot especially when im doing something e.g. internet, photoshop etc. However the problem isnt with the hard disk as i checked the S.M.A.R.T feature and it said verified. I am a very advanced user and i have a lot of experience. On my laptop i have a windows partition running windows 7 that does'nt seem to be affected by this problem. Please help ? PS i tried repair but itsnt working. I have a mac book pro 4gb 500gb hardisk.