Hi. Alright, first, let me explain a little what happen the last months. My mac mini 2011 suffer from (according to the pseudo tech at apple) a problem with the power flux ...whatever that may mean, anyway after replace the damaged part i was asked if i wanted to upgrade the MacOs (it was running on 10.7 lion) and i agree if they can put 10.9 Mavericks on it because i thought anything further may be too much for my machine. Now, i talked to a lot of people techs and users and they told me the 2.5Ghz i5 / 8Gb ram should handle Mavericks without any issue but the results so far has been disastrous and here is my question... in the end the techs were a group of incompetents that erase my HDD without asking me after making a manual and really incomplete backup that was later delivered on a folder on the desktop like in the old MacOs9 days... that way to backup end up making a mess on the permissions of the library folders inside the "Old mac backup" folder landed on my desktop (still don't know how to get the old application support folder out of there without make a bigger mess) Anyway.... -Now my Mac mini is overheatting as hell... it even remain really hot when it sleeping -The Finder can get 100% of CPU with just looking at pictures on quickview -The console is plagued with tons of " Info.plist does not contain an XPCService dictionary" every second -"com.apple.IconServiceAgent" is constanly using 500Mb+ of Ram (it uses 20Mb on my boss imac 27") -The console is also plagued with "com.apple.IconServicesAgent: Icon filename entry missing from bundle info dictionary for bundle at URL..." -The preview of the icon pictures does not show and open a folder with many pictures cause the fans to max speed -Everytime i quicklook a picture the console get this "quicklookd: Warning: Cache image returned by the server has size range covering all valid image sizes. Binding: VariantBinding [0x403] flags: 0x8 binding: FileInfoBinding [0x303] - extension: webarchive, UTI: com.apple.webarchive, fileType: ???? request size:32 scale: 1 Im really afraid of what those idiots did and how could it make a permanent damage to my mac (last day i had to force shutdown it because it get froze... even the cursor stop moving and the fans get full speed with no stopping) ...i remember some guys that failed to apply right the thermal paste and end up burning up the graphic card in a week Is this even close to normal? Is there a fix for all this? can i reinstall osx without having the 10.9 installer or the account which it was activated? Im kinda desperated. Thanks.