Wifi on enterprise wpa2 is terrible, other macs connect fine and same with almost any pc. A friend has same laptop as mine and his also has same problem. Messages freezes when I try and search and also will randomly have weird graphical issues where all the people are listed will have scrambled pictures overlaid from elsewhere on the screen. Same thing happens when running display with hdmi. Also slow frame rate when scrolling through webpages and pdfs. I haven't been able to consistently reproduce issues, but they randomly keep happening. From what I have read there is a focus on airport and graphics drivers, and people have said the nightly webkits improve safari. Also kind of off topic but should I be using ~5.2 GB ram with just safari,mail, and messages open?