I downloaded CleanApp and deleted all of the cache on my MBA, I checked all the boxes on the Cache part and then emptied my trash can, but 3 files would not get emptied because it says that its being used so I rebooted and then deleted those 3 files completely... Now my paranoia might have gotten the best of me. I wonder if I made the right choice by deleting all of the caches on the computer...even the os x caches? Someone please help me, should i reinstall Leopard? I'm afraid that I might delete a cache or more that was important to my MBA, I just wanted it to be faster. Is it alright that I did this? Did I made the right decision? Please help, thanks.