This patch will save page scrolling state:

diff -r 4d897972bfeb djangobb/djangobb_forum/templates/forum/index.html
--- a/djangobb/djangobb_forum/templates/forum/index.html Tue Jul 05 16:37:00 2011 +0300
+++ b/djangobb/djangobb_forum/templates/forum/index.html Fri Oct 21 06:13:38 2011 +0300
@@ -16,7 +16,8 @@
}
}
$(document).ready(function(){
- $("a.toggle").click(function(){
+ $("a.toggle").click(function(e){
+ e.preventDefault();
header_id = $(this).parent().attr('id');
body_id = header_id.replace("head", "body");
item_id = '#' + body_id

(I can't make pull request on bitbucket because of unknown problem with subrepo)