Update to latest Rails. A little bit of jiggery-pokery is involved, since they neglected to re-include vendored Rack in this release.
Instiki now runs on the Rails 2.3.0 Candidate Release. Among other improvements, this means that it now automagically selects between WEBrick and Mongrel. Just run ./instiki --daemon
As a side benefit, fix an (non-user-visible) bug in display_s5(). Also fixed a bug where removing orphaned pages did not expire cached summary pages.