Comment 8 for bug 441475

I confirm this bug (that didn't exist in 9.04 Jaunty) on my Asus EeePC 1002HA since upgrading to 9.10 Karmic.

Wi-Fi hardware is Atheros AR928X

Wi-Fi works, but after resuming (after a suspend to RAM), the Wi-Fi speed drops to a crawl and the connection gets dropped, then reconnects, then drops again...

Manually rmmod'ing then modprobe'ing ath9k fixes the issue everytime, until next suspend/resume...

Adding ath9k to the "MODULES" list in /etc/default/acpi-support has absolutely no positive influence here (although I haven't tried to add the dependancies as well, yet)