Erwin,
Ill have to second the thread post count bug. Ive got that problem as well

Users post count does not increment as expected, nor does the reply count on the thread its posted to
Odd thing is - if I delete the post created by the form - it decreases the users' post count (as expected).
Im using vbulletin 2.3.4 case that matters.
Good job on the rest - she works like a charm!