I had setup ubuntu 8.04 server w/ispconfig followed howtoforge guide every stepa. It work well for a while but now I have complain from my customer who hosted website with my server. Someone cannot login or access PHP pages and display "Access Denied! Your're address is blacklisted". The error page is look like text file not contain any html tag and worng spell of "Your're". Sometime hit back and refresh solved the problem but not everytime. Error show on PHP page that contain login-password script, phpBB webboard when try to submit post or login. Does anyone face the same problem like me or has any ideas or solutions plese help. Thanks in advance.