same problem here 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux on ubuntu 11.10
Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection thinkpad R400
applyed fix accourding to https://bugzilla.redhat.com/show_bug.cgi?id=587825#c8
and set it to /etc/modules iwlagn 11n_disable=1
same problem here 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
on ubuntu 11.10
Network controller: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection
thinkpad R400
applyed fix accourding to https:/ /bugzilla. redhat. com/show_ bug.cgi? id=587825# c8
and set it to /etc/modules
iwlagn 11n_disable=1