I'm sure there will be a few posters who remember the game. In videprinter style, there was a bit of a goal fest:

Cardiff 3 Peterborough 1 (Dwyer 74)
Cardiff 4 Peterborough 1 (Evans 75)
Cardiff 4 Peterborough 2 (Gregory 78)
Cardiff 5 Peterborough 2 (Evans 80)

I'm struggling to think of a City game with 4 goals in a 6 minute spell, though we did score 3 in 5 minutes at Ashton Gate.