Is there any problems that have occurred with 2011 macs. Heres my specs. 2. 4 Ghz Intel core i5, and i have 4 gb of ram. Mavericks was a pain for me when i first upgraded on release, constant beach ball of doom, but updates have improved stability. I didn't want to go through that again with yosemite so thats why i waited, plus i didn't see a point until photos came out. i would like to add, my macbook is a macbook pro. Also i have a side question, for some reason as of lately, my mac takes forever to get my iMessages. And for some reason i can write notes in the note app and it pops up on my iPhone, but when i write notes on my phone, it doesn't show up on my mac. What gives? lol. Should i resign out of my iCloud account on both devices and resign back in? i managed to fix the note problem, for some reason exchange was made default.