Tearing my hair out here, so if anyone has any suggestions, I'd appreciate it. Details: - 2011 13" MacBook Pro, running 10.7.4, fully updated - regular WEP wireless network This computer has connected to our wireless network just fine for the last 8 months. Out of the blue yesterday, it would connect to the network, but not the internet. Safari just hangs, itunes Store won't load, etc. I've tried deleting and re-adding the network, emptying the cache, deleting and re-adding the wireless adapter, etc. The weird thing is no matter how many times I delete the network, it always seems to remember the password. Is there some way I could completely obliterate all saved network settings? I thought deleting the networks from the list in System Preferences - Network would work, but alas it has not. The computer connects fine to other networks, including an iPhone hotspot. Nothing has changed in the last couple of days. And creating a new user on the computer doesn't solve the problem. Anyone have any ideas? I have a Genius Bar appointment for it (it's not my computer), but considering they will be trying to troubleshoot it out of range of the network that's giving the problems, I'm not all that confident anything is going to result. Thanks in advance. And ugh.