I concur with the above. To the developers, please goto https://bugs.launchpad.net/ubuntu and try "iwl3945" as search keyword. You will get 76 hits which mean that this is far from a individual issue.
I have the same issue with my Sony Vaio with iwl3945 intel wifi. Upon boot-up the network manager shows that I'm connected but I can't reach anything. -- Intel 3945 Wireless in Hardy cannot negotiate WEP or WPA Keys https://bugs.launchpad.net/bugs/253697 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs