Re: RC3 using URLs relative to gallery not forums
If you have modified your forum navbar template, the paths will have "gallery" in them unless you use full url's or at least /forum/memberlist.php /forum/calendar.php etc. in all the links.
EDIT: This may have something to do with this thread, but I cannot decipher what it means:
"The construct_adv_navbar() function has been done away with and instead a replace is done on the template cache for the navbar template to update links. This helps with those who have added other hacks that will show up in their navbar and ensures that they will not have to do any extra work to get these hacks to display on their gallery pages."