Hello All,
I'm running fail2ban version 0.8.4-27 on fedora core 15. Occasionally my fail2ban stops banning. A start-stop of the fail2ban service brings things back to normal. There seems to be a 1-to-1 relationship between the hangs and log rotations. For example every time there is message like "fail2ban.filter : INFO   Log rotation detected for /var/log/httpd/error_log" in my /var/messages, banning stops.
I have a single active jail that monitors the apache-log and the hangs were not happening before I added that rule. Here is its entry in jail.conf

enabled  = true                                                                                       
filter   = apache-bad-page                                                                            
action   = iptables-multiport[name=badpage, port="http", protocol=tcp]                                
           sendmail-whois[name=badpage, dest=root, sender=fail2ban@neptune.localdomain]               
logpath  = /var/log/httpd/error_log                                                                   
maxretry = 5                                                                                          
findtime  = 60                                                                                        
bantime  = 600

and the filter is:
# Option:  failregex                                                                                  
# Notes.:  regex to match failures to find a home directory on a server, which                        
#          became popular last days. Most often attacker just uses IP instead of                      
#          domain name -- so expect to see them in generic error.log if you have                      
#          per-domain log files.                                                                      
# Values:  TEXT                                                                                       
failregex = [[]client <HOST>[]] File does not exist:                                                  
# Option:  ignoreregex                                                                                
# Notes.:  regex to ignore. If this regex matches, the line is ignored.                               
# Values:  TEXT                                                                                       
ignoreregex =

Any ideas as to what may be the problem?