For what it's worth, this problem has nothing to do with password authentication. I had the same problem on a totally open network. Fortunately the backports-modules fixed everything for me.
Obviously I'd like to nominate this fix for a mainline update. -- Unable to connect to WEP encrypted network when using iwl3945 module (but success when using ipw3945) https://bugs.launchpad.net/bugs/176602 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