We are happy users of DrProject 1.2 with SQLite and scgi. It works very well for our purposes, not exactly software development, but just for tracking our tasks and documentation, several projects, single login, different roles for each users, clean urls.
The only trouble I have with it is that I understand that the last official stable release is this 1.2 (or 1.2.1, according to the Subversion tags), and then there is some confusing movements with a 2.0-dev, an 3.0-dev and this Django rewrite called Basie. We don't know exactly which will be our migration path, but we hope we can follow them. Ferran -- http://mail.python.org/mailman/listinfo/python-list