sounds like a timeout issue. try the latest intrepid packages from http://launchpad.net/~network-manager/+archive please. those give your connection more time before asking for key.
** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- [intrepid] alpha 6 - WPA & WPA2 Personal won't authenticate short passwords https://bugs.launchpad.net/bugs/273336 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