Comment 15 for bug 944271

System running 12.10 also experiencing the microcode error, resulting in drop outs, high packet loss and routing issues.

$ lspci -v
04:00.0 Network controller: Intel Corporation WiFi Link 5100
 Subsystem: Intel Corporation WiFi Link 5100 AGN
 Flags: bus master, fast devsel, latency 0, IRQ 44
 Memory at d0400000 (64-bit, non-prefetchable) [size=8K]
 Capabilities: <access denied>
 Kernel driver in use: iwlwifi
 Kernel modules: iwlwifi

$uname -a
Linux guy-ThinkPad-X100e 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

I can confirm disabling 11n option gives me a rock solid connection:
$ sudo su
$ echo 'options iwlwifi 11n_disable=1' >> /etc/modprobe.d/iwlwifi.conf
$ rmmod iwlwifi
$ modprobe iwlwifi