@sickness my repos are:
# cat /etc/apt/sources.list
deb http://all.repository.backtrack-linux.org revolution main microverse non-free testing
deb http://32.repository.backtrack-linux.org...

Same here. When I use "1.Update and clean Backtrack" it says there is not-needed packages use autoremove and one of this package was ettercap.
Unfortunately when I try to install it back it says...