Yay! Completed level 2! I'll edit with a review shortly.
EDIT Timb04 - Level 2: I think we forget something...
Number of Lemmings: 3
To be saved: 3
Release Rate: 99
Time: 4 minutes
Skills: 20 builders, 1 basher
Good: A challenging level with a clever solution.
Bad: Waiting for the builder at the bottom gets a little tedious, and it does seem easier then the level before it.