thecoalman - 4:32 pm on May 29, 2011 (gmt 0)
The thing with open source/free forum systems is security.
Again phpBB's track record since late '07 speaks for itself. Of the 5 issues Secunia lists only one could be considered serious. They introduced RSS feeds in 3.0.7 and it was possible for someone to read private forums. The patch was issued immediately as soon as it was found.