2GB ram, 1.86ghz c2d cpu. on 10.6.8 right now. Person using it complains it beach balls too often. I already educated him and said beach ball is inevitable period but it shouldn't be happening too frequently. I know specs aren't great, and I don't think there's a chance I'd try to take the Yosemite leap. Especially with graphical changes and lagginess I experienced on Safari on my 2011 MBA, not worth it. Considering putting Mavericks on there instead, do you think he would benefit performance wise from SL-> Mavs? I cleared history, and repaired disk permissions. also checked login items, none aside from iTunes helper. Any other advice you have? His SSD is only half filled up as well, for people who think maybe the storage is near full. Appreciate it! Also, its mostly used for web browsing. Nothing hardcore at all.