When logtarget=SYSLOG is used, the syslog entries have a format that is incompatible with the "rest of the world". In the following syslog line
Jun 15 11:14:19 bear 2008-06-15 11:14:19,364 fail2ban.server : INFO Exiting Fail2ban
there is a double timestamp and the loglevel shoud follow the host name. A small change in fail2ban's log format fixes this.