It seems it was due to a conflict between the rt2870sta and the rt2800pci modules.
Blacklisting rt2870sta solved the problem (both in Debian an Ubuntu). Sorry for not asking to close the bug report before. Thanks! 2011/4/22 Moritz Mühlenhoff <j...@inutil.org> > tags 581525 moreinfo > thanks > > On Thu, May 13, 2010 at 02:31:34PM +0200, Miguel Angel Fraile wrote: > > Package: linux-2.6 > > Version: 2.6.32-5 > > Severity: important > > File: rt2860 > > > > It seems it's not possible to connect to WPA2 wireless networks with the > squeezix version of the rt2860 module. > > > > I've tested it with both network-manager and wicd. Both of them are > unable to authenticate with the correct password. > > > > Both have NO problems to connect to WPA-PSK networks. > > > > Tested with a Buffalo WZR-HP-G300NH router. No problem connecting to that > WPA2 network with other devices. > > > > The router encryption is set to WPA/WPA2-Mixed TKIP+AES, using a > preshared key. > > > > Tested also after updating the rt2860 firmware-ralink to the Debian SID > version (v0.24). No luck, either. > > Does this still occur with the final Squeeze kernel or more recent kernels? > > Cheers, > Moritz >