I upgraded to 11.04 and now have no problems with wifi anymore. So I'm going to close this bug since cannot reproduce the bug, neither provide any new info about this bug.
** Changed in: wpasupplicant (Ubuntu) Status: Incomplete => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/689007 Title: Cannot connect to some unsecured public wifi networks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs