Re: nicer slug url rewrite plugin (done!)
I discovered another issue with this hack. If you write a new post in a new topic, after the submitting the form, you are redirected back to the forum’s front page, instead of the forum you were on. I spent some time digging around the get_post_link() related functions, and couldn’t figure out exactly what was going on. However, I was able to make this modification to the bb-post.php file to get it to redirect properly.
Paste this after line 43, in bb-post.php of bbPress 0.9.0.2
$link = str_replace('forums/', "forums/". $forum->$topic_slug, $link);