for the past 4 months I have accessed my schools network using my powerbook g4... i just plugged it in to the lan and it worked... i only was able to use the internet and not the actual school network but thats all i needed... well today it just stopped working. I cant access the internet from my computer anymore, i'm typing this from my roomates computer. I plugged my computer into his lan jack and it still didnt work. The school isnt going to help because the IT guy things macs are evil and wont even talk to me because I have one. Does anyone have any suggestions? I didnt change any preferences. One thing to note is that this first started happening while I was downloading a file... the file was downloading, but I couldn't access the internet or get on AIM. Once the file was done nothing worked. Any help would be greatly appreciated because I have no idea what to do......