I've noticed in ISPCONFIG that Apache was not working, but all the hosted websites are accesible... Strange.
I've checked apache with "apachectl status" and get following:
Looking up localhost
Making HTTP connection to localhost
Alert!: Unable to connect to remote host.
lynx: Can't access startfile http://localhost/server-status
I've tried to telnet to port 80 and get an error (port 21, 81, etc have no problem).