Not sure if this is an error msge or not.
But when i close Ettercap, using ettercap -G,
The terminal window displays this msge.

iptables: No chain/target/match by that name

Following the tutorial posted here on RE

Ettercap dosn't seem to be able to sniff anything but open paswds.
Tried logging into my gmail acct. from another machine and i get nothing.