As my co-hort in crime with nGallery, Ken Robertson, reports:

http://weblogs.asp.net/krobertson/archive/2004/04/26/120342.aspx

We just released nGallery 1.6.1! This release is pretty awesome. It has a number of really cool features, including the album sorting, RSS support, trackable invitations, "friendly" URLs via URL rewriting, a number of huge performance improvements, as well as many other features.

Check it out!