In 1.98 I always had to alt f4 from the last window to quit AH, online or offline.
Now I have to alt f4 from inside the game to quit AH. I do have a much older system and vid card so it may not be relevant to those running systems more up to date. I am running the HiRes vid pack although it was happening in the standard vid as well.
As always happy with the game advances and many thanks.
Win XP Pro
P4 2.40 GHZ, 2.00 GB Ram, GeForce FX 5500, Audigy Sound Card.