Hey everybody! I bought my MBP in summer '09 (just when they renamed them to MBPs) and I'm generally a real happy customer, BUT my macbook starts making problems which I can't stand. Can you help me out? #1: Firefox (3.6.11) is slow or jerking on flash-heavy sites Example: I load an embedded youtube video and although the video is fully loaded the picture keeps stopping from time to time but the sound continues. I thought it was a firefox-mac issue, so I switched to safari, no hassle. #2: Safari and other apps randomly crush (not responding) From time to time when I re-open safari, I get the loading symbol and everything hangs. iTunes crashes, safari crashes, firefox crashes. No chance but to force quite and restart multiple times. #3: Deinstalled apps still running I once had Sophos and little snitch installed, which I deleted through CleanApp - however Sophos and other deinstalled apps still run in the background (checked via Activity Monitor [also after multiple restarts]), I don't want these processes to run and I want them deleted, how can I do that? #4: My mac is slow Somewhere between '09 and '10 my mac became slower, I don't know how, I don't know when, but it happened. It's just normal UI stuff that seems slower (spotlight takes multiple seconds to open, etc.) From time to time I used to repair the disk permissions with disk utility which speeded the mac up for a little time (probably until restart). I downloaded and installed onyX and it told me that my startup disk had a failure, which I solved through starting with the os x cd and running repair disk with disk utility. However even that didn't change anything. #5: I can't change the default chosen apps When I code I use textmate. But the default app is always xcode or something else, when I choose "open with" and check textmate + make default, it doesn't work at all. Next time I look for a file in the finder it says again open with xcode. Stuff like that drives me nuts and takes the fun away Now I don't have that many apps installed but the ones I use the most, should work without hassle. I have a 500GB hd which has around 130 gigs still free. I could move those files to an external drive, but would that solve my problems? I doubt it. My guess is that somewhere a little stupid app that I installed (and deinstalled again), stays somewhere in the background and f*cks some other processes up , which slows everything down. I'm really desperate because even some older macbooks react way faster than mine I'd appreciate any help.