You can see changes here:
https://lists.ubuntu.com/archives/karmic-changes/2009-October/010290.html
There are some fixes for ath5k but not ath9k
You can see changes here:
https:/ /lists. ubuntu. com/archives/ karmic- changes/ 2009-October/ 010290. html
There are some fixes for ath5k but not ath9k