Well... abgzam is correct. Need to get use to disk permission. But then if the problem persist, at best, restore your OS by using the DVD that come with your iMac. Just refer to your DVD's instruction and you will be fine.

As for abgzam's advice, go to your "Utilities" folder then select "DIsk Utilities". Thereafter select your HDD volume on your left hand side and click "Verify Disk Permission". If the report shows some error, just click "repair". But if the problem persist... just reformat it.

For me, I dont really like this kind of problem when it always annoying us. Normally, I just re-format the whole thing. Plain simple but effective.

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Added on April 29, 2007, 11:21 amwait a minute...!! Maybe you can get yourself with Onyx. Google it and download it. Use it... definitely usefull for you if not now.. but in future

This post has been edited by AppleMacUser: Apr 29 2007, 11:21 AM