After moving from 1.2.1 to 1.3a'5', I've noticed these few bugs:
1.) When I get an email for a comment that has been left, all the meta data (name, IP, email, etc) looks fine but the comment post content is all encoded. I don't know if its on my side or an alpha problem, but I have to log in to WP to see what was actually said.
2.) My child categories (categories that branch off from a parent category) aren't being shown directly under their parent category and indented like they did in 1.2.1. It just alphabetizes them like any other category.
If anyone has any suggestions or is noticeing these same issues, let me know.