New version of Intercepter-NG is way more reliable.
Also there is new console version of Intercepter.
Intercepter-NG [Console Edition]
+ Sniffing passwords\hashes of the types:
ICQ\IRC\AIM\FTP\IMAP\POP3\SMTP\LDAP\BNC\SOCKS\HTTP\WWW\NNTP\CVS\MRA\VNC\MYSQL\ORACLE\NTLM
+ Sniffing chat messages of ICQ\AIM\JABBER\YAHOO\MSN\IRC\MRA
+ Reconstructing files from:
HTTP\FTP\IMAP\POP3\SMTP\SMB
+ Network discovering and automated ARP Poisoning
+ Capturing packets and post-capture (offline) analyzing
It has two modes, pure text mode and GUI mode based on ncurses.
There are builds for NT\Linux\BSD\MacOSX\IOS\Android.