It seems that the sort direction 'ascending' and 'descending' in the forum control panel is swapped. I check the language strings of viewboard.php and it look correct. I run this query to set all my boards to descending:
Code
update ubbt_FORUMS
set FORUM_SORT_FIELD = 'last', FORUM_SORT_DIR = 'des'
If I check the the control panel all forums show 'ascending' sort direction.

my board: http://www.dragonclan-forum.de
my hobby: http://www.biker-reise.de
Ich kann bei Fragen zu UBBthreads in Deutsch weiterhelfen oder es zumindest versuchen