the channels for directory have been changed on freenode. Now use :
#apache-directory for users
#apache-directory-dev for the Apache developpers team.
You can find more instructions on http://directory.apache.org/community%26resources/mailing-lists-and-irc.html
NOTE : remember that IRC is _not_ the prefered communication channel for the project. Better use the Mailing Lists for reports or questions, and JIRA for issues.