[b41] generating the level never finished

[Kalirion]

I was in a Farportal dungoen based on a map style I've never seen - tiny levels, often only an intersection of two short hallways, light green walls, summoning traps every other step. When I took the 3rd or fourth staircase down, the game never finished "generating" the next level. I let it sit there for 5-10 minutes, killed the process and started the dungeon over. This time there were no issues.