I'm having a problem in Debian Sarge that is getting me mad. Everything runs ok, but from while to while proftpd process gets into state "D" when ispconfig restarts it at 23:59 every night. It happens sometimes from day to day, sometimes lasts one week even 10 days. But sooner or later, I know proftpd will hang and the only solutions is reboot whole machine to get ftp working again. It seems a Debian/proftpd bug (I got it hanged manually restarted), but I post here with the hope someone had this problem before than me (and found a solution I also liked to know if I can try installing vsftp without breaking all the ispconfig installtion. Thank you very much!