Hello, I have a macbook that I bought in South Korea about 4 years ago. I am now in Canada trying to connect to my school's wifi. Prior to this I was running 10.4 and I was having no trouble connecting to this network. Upon upgrading, I was given a "connection timeout" message whenever trying to connect. In the meantime, I have had no trouble connecting to other wireless networks. I have tried a variety of things: - changing the order so that wifi is first to connect - rebooting PRAM - upgrading to lion, then fully updating all lion software - logging in to the network with other user names - going to guys who run the network and double checking that neither my user name, nor my computer's id has been banned from network. After spending far too much time researching this, I have come to the conclusion that maybe my country code has something to do with this. When I go into the detailed "about this mac" page and look at my wifi I see that supported PHY Modes are 802.11 a/b/g. I also notice below that my school's network is 802.11 n. I think this is my problem. Somehow, in formatting my computer and upgrading my OS I lost the ability to connect to 802.11 n networks. Does it sound like I am on the right track? Is there any sort of firmware, upgrade, update, fiddling I can do in order to get my airport back on this network? I wouldn't really care, but I need wireless connectivity to write my exams. Any help greatly appreciated!