RT 2.0.0RC3 is out now.
There was no RC2. It was a bad dream. Pay no attention to the man behind
RC3 fixes a bug that caused users to get stack trace when they tried
to delete ACLs without permission.
RC3 fixes a bug introduced in RC2 which caused Ticket pages with links
to not display.
autoconf is your friend until it mysteriously stops working, at which
point it is a snarling wolverine attached to your genitals by its teeth
(that said, it’s better than most of the alternatives) – Nathan Mehl