There have been a severe security hole in the forum software. For detailed information look here:
http://www.phpbb.com/phpBB/viewtopic.php?t=240636 and
http://www.phpbb.com/phpBB/viewtopic.php?t=240513
The forum has been updated. Although I didn't notice so far it may be possible some features don't run as before. Especially language files and in styles other than subSilver you eventually notice unexpected behaviour. If you do so please let me know. The other files will be updated as soon as available.
Regards
Volker