All above mentioned bugs have been fixed. Please refer to the installation instructions and reapply the code changes to ubb_new_topic.cgi, ubb_new_reply.cgi, ubb_edit_post.cgi, and public_edit_post.pl.
Jedi Thrawn and Compboy: your posts are incredibly unhelpful. In the future, please do not waste your time and that of others if you have nothing useful to contribute.