$ lspci | grep -i wireless 0c:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
I've had this problem too. Installing linux-backports-modules-jaunty-generic and adding the "11n_disable*" options in iwlagn didn't fix it for me.
$ lspci | grep -i wireless
0c:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
I've had this problem too. Installing linux-backports -modules- jaunty- generic and adding the "11n_disable*" options in iwlagn didn't fix it for me.