Lesson taken on board - I made the final mistake of checking the river in the misguided hope that someone would take a shot at it...
Checked round and...
calimeromg: shows [td

] (a pair of Fours)
HERO: shows [

] (four of a kind, Fours)
Zabalonchi: mucks hand
brandyCK: mucks hand
HERO collected 630 from pot
*** SUMMARY ***
Total pot 630 | Rake 0
Board [

]
Seat 1: Dominik781 folded before Flop (didn't bet)
Seat 2: brandyCK (button) mucked [

]
Seat 3: OrdonK (small blind) folded before Flop
Seat 4: carpiau (big blind) folded on the Turn
Seat 5: pakkisnils folded before Flop (didn't bet)
Seat 6: whitewolf250 folded before Flop (didn't bet)
Seat 7: calimeromg showed [td

] and lost with a pair of Fours
Seat 8: HERO showed [

] and won (630) with four of a kind, Fours
Seat 9: Zabalonchi mucked [

]