Every single time, I get him down to about 20% health, and it logs me out and says "You have been logged out due to Abnormal Client Status. Error d;flkhasdl;fkdnhasl;jk"
It's done this to me a couple times before, but never 4 times in a row. Perhaps it has to do with using an EXP boost potion while running? I've killed him plenty of times in the past few days/weeks without an exp pot on, but today I figured I'd use one while doing my daily quests. Hopefully this helps narrow down the problem for you guys.
Edit: It just did it to me at Rahnoff too (Basement 20 Van Cliff).
Edited by Mvffin, 14 December 2010 - 10:14 PM.