OK, I tried the most recent Precise kernel with iwlagn 11n_disable=1 and the bug is definitely still present. I tried 3.3.0-030300rc1-generic-pae and it seemed to happen there too.
OK, I tried the most recent Precise kernel with iwlagn 11n_disable=1 and the bug is definitely still present. I tried 3.3.0-030300rc1 -generic- pae and it seemed to happen there too.