I've had to type this three times because of this issue. So, I'm going to be short about it. My wifi sucks where I live, on campus at a university, with no access to router. Friends with both Windows and Macs have no issues. I have no issues anywhere else. I can't watch YouTube, play online games, or even download a file about a couple hundred Kbs. I have tried: zapping PRAM resetting internet settings disabling IPV6 using open DNS servers. I can't use ethernet because we're only allowed one modem per apartment, and my roommate doesn't have Wifi so he uses it. Any suggestions?