Comment 14 for bug 295414

I can confirm this behaviour, too.

No issues with Feisty...Hardy - hours of smooth video-streaming with up to 12MBit/s!
With Intrepid LiveCD the driver "ipw2200" crashed already 3 times like this:

Nov 15 00:59:14 ubuntu kernel: [24161.636049] ipw2200: Failed to send SSID: Command timed out.
Nov 15 00:59:48 ubuntu kernel: [24195.640125] ipw2200: No space for Tx
Nov 15 00:59:48 ubuntu kernel: [24195.640140] ipw2200: Failed to send SSID: Reason -16
Nov 15 01:00:08 ubuntu kernel: [24214.789101] ipw2200: Firmware error detected. Restarting.

To reconnect I just have to reload the driver:
> sudo modprobe -r ipw2200 ; sudo modprobe ipw2200

hope this helps