In using version i yesterday, I had two crashes... weird ones.
Main Computer XP SP2 - 3 Toons (only other app I had running was Firefox in the background)
2nd Computer XP SP2 - 2 Toons
My main computer "froze" up... well, at least the video did. I was still able to control all 5 toons from my 2nd computer.
Had to task manager and force quit all of them and reboot.
This happened after about 1.5 hours of play.
It seemed like it happened when I was rotating the view with my mouse then about to click on an quartermaster NPC in Skettis. The 2nd time was when I was rotating the view with my mouse and about to click to bomb the eggs in Skettis. (it might all be coincidence though... because I haven't been able to have it repeat)
This happened twice, so I switched back to version G, and haven't had a problem the rest of the day and today.
Let me know if you need any specific information and I'll try to reproduce it and actually gather more info while playing... instead of just playing. :)