Maybe I'm wrong here but on another system without ISPConfig the problem does not occour... I use ISPConfig on an Debian Sarge 3.1 System with proftpd. unregulary I get "can't connect" statements while I try to connect via FTP. If I retry it'll work (mostly) IdentLookups in the <Global> Section is turned "off" but this does not help. Anyone with an idea?