The wireless on my Ubuntu works on all the other wireless networks. But on this university network it never forms a connection. But I can see the signal at 80% (indeed I see several signals at 80%, 40% and 20% by the same name university-network name). On a Windows XP laptop, the connection is formed as usual, and there is only one network visible to Windows.
PS: The wireless connection on my Ubuntu works at other places within the university with a network with the same SSID.