Hence my last comic ;-)

This problem comes from trying to play the game too quickly. Let the map load up before doing anything with your stats.

I had this problem with the previous version, ended up killing the process, logging out and back in. That seemed to fix it.

My limited testing on drowning suggests it's linked to your personal timer.

If we don't already have it, I could see doing a 'need air' display thing not unlike what happens for getting serious damage. Have it take strong effect just short of 50%, so us idjits can get back to land after noticing the whole air supply thing.
//Torrenal

Saves aren't compatible between versions.

I used regeneration for leveling up to face the boss monster at the bottom of an area. With many starter dungeons and possibly more to come as new races receive starting towns, these starter dungeons offer a good option for leveling up. However, even in a fantasy realm, repopulation of cleared ares is realistic. I challenged Bill the stone troll at level 7 and retreated to the world map to explore the other dungeons to gain more levels. When I returned to challenge Bill again, he had not recovered any of the hit points he had lost. The game needs some measure of repopulation and regeneration by the monsters.

It's unlocked by completing a certain quest. If you read the changelog it should be pretty obvious.

(Honestly, you'd think some people don't read the 100+ lines of changes in each release... ;) )

Uh ? It should be in the changelog, it was wehn I pre posted it ..

Anyway no stuff don't regen, that's an experiment; I am really quite convinced it's totally unneeded for progression, you should reach the level you need just by doing the zones.
Now if you still want an "endless" supply of mobs/objects you can always use the new sher'tul exploratory farportal

I found the entrance to Bill's level in the Trollmire, and have killed Bill and all his friends, as well as looted everything there. However, the quest still shows as active. Is there anything else there I need to do?

YASD indeed :)

Finding that the new version does not take well to alt-tab (which I need to do from time to time) and does not exit nicely. (Makes you quit twice.) Also there is no way to avoid fullscreen (instead of windowed) mode, so alt-tab is the only temporary exit if you don't want to just close the program.

What happens is if you alt-tab when you come back all keyboard input is disabled which ruins the ability play comfortably.

Check out the b21 announcement:

http://te4.org/blogs/darkgod/2011/03/news/t-engine4-tome4-beta21-aka-world-wide-tome-ii-unleashed

Either you need to connect your online profile or do the manual change told there