afaik LGPL mean:
1. you can link to and redistribute
binaries, using whichever license for your part of the code, as long as you
a. create something that adds a significant thing to the library (so you can sell MyCoolOrm which delegates to NH)
b. attach the license file next to NH dll
2. if you modify the source, then:
a. you must redistribute the modified source with you compiled binaries
b. you should share the changes with the community
it's not as bad as GPL.
I like MIT/BSD/ASL more
*** disclaimer - all I know about law is what I see in Boston Legal ***