Of Cats and Woodelves quest in Arvud slave market has some bugs:

• Tharmadalion's case of mistaken identity topic has an old entry after the quest ends.
• If you start releasing the two Khajiits beginning with Khesurra, the go free topic doesn't release her, nor it updates the quest. Only when you release J'Suhkurr, the quest updates and they disappear on cell change.
• The quest is not marked as finished and stays in the journal forever.
• If you agree to help Tharmadalion, and then, instead of negotiating his release, by him from the slave dealer, and release him via go free topic, he stills retains a greeting where he asks you to negotiate his release.

Otherwise, this is a very funny quest. I lol-ed very much ^_^