Hi my first Thread: For a view weeks now I noticed that may Macbook Pro 15 late 2011 ( 2,2 GHZ/ 4 GB Ram/ 500GB HD 5400 rpm) is very slow when I work with documents/pictures/videos and especially PDF's. When I open them with Preview or by pressing the Spacebar, I always get the Beachball Icon. This also happens when I'm closing the document/picture/video. The Icon stays for abou 3 to 10 seconds. This doesnt seem normal regarding that I have this Computer for may 5 months now. However Applications ( Safari, Outlook, Photoshop, Lightroom, Illustrator etc.) seem to open normally. I used to drop the machine once from my desk, but brought it to an Apple Care Centere. They cheked the HD and said it looks normal. Since then I often have a S.M.A.R.T. Programm running and everything on the HD looks fine. ( Also Disk utility from Mac says its running fine...) Here are my questions: Is there any possibility that this is caused by a Hardware Error? Maybe not the HD but something else. Or will it maybe help to reinstall the OS or run a repair Software? ( If so which Software?) Since I stay in Cape Town, South Africa right now, we only have a Apple Reseller here and he will charge me at least 65 Dollars if he will check my machine and find out that the Problem is Softwarerelated and not Hardwarerelated. Thank you in advance for your reply!