The Panthers have signed 26-year old DT Ed Johnson.  Johnson played in 4 games for the Colts last season and he made 11 tackles including one tackle for a loss.  He has now played in 21 games in his NFL career and he has made 59 tackles, 1 sack and he has forced 1 fumble.  This was a good signing for the Panthers because Johnson is a solid player when healthy and focused.