We are having issues with a 5 months old Imac 21 running OS 10.8.3. It was fine until I did restore a file that got weirdly lost.
The restore itself went fine and was quick.
So I did restore from a time machine backup, and then Time Machine told me to do a fresh backup, so I did. It took about 9 hours to complete.
Since then, from the moment I switch on the computer until it comes to login, it takes about 10 minutes.
Any idea why this keeps happening ?
Thanks for your help,