Made the default to allow self_registration as this was the previous behaviour. It is always a bad idea to change the behaviour for existing sites. Still wondering why the parameter does not show up on my installation though ...
Applying the groups your member of patch by Branimir from head: cvs update -j1.4 -j1.5 packages/acs-subsite/lib/user-info.adp cvs update -j1.11 -j1.12 packages/acs-subsite/lib/user-info.tcl