I have had my Macbook Pro for 3 years. Recently, well over the past 6 months, it has been acting "strange." Safari will get hung up loading a webpage and I will have to close it and restart it to get it to load. Also the application "Evernote" will open but immediately get the "beach ball of death." My headphone jack has just recently stopped registering if there is anything plunged into it. I have run Onyx on my Mac several times, repaired the disks, restarted it, cleared caches, everything and it is still acting weird for a Mac. Sorry for the poor choice of words, but there really isn't any other way to describe it. My mac worked great for the better part of half the time I've had it, but past then it has gone downhill. I would like it to respond quickly and work as close to brand new as possible. I am fairly tech savvy, more so with Windows(I know its a shame) but I can get my way around the Mac well enough for any technical advice. Any similar problems, suggestions, or tips would be greatly appreciated. I would like to know if I'm the only one with this problem, or if there are others out there too just like me.