mod-forums_last_posts.php uses a variable $i to iterate
It brings a problem, since in tiki_modules.php, which
includes mod-forums_last_posts.php $i is being used to
iterate over modules.
If $i gets overwritten, strange things may happen, like
skipping some modules.
Changing $i's name helps, but there should be a cleaner
(I posted it in 'Development' forums before, since I
didn't notice 'Bug Reports' link :))