Weeks after Morgan Spurlock's documentary Super Size Me wonan MTV documentary prize at the Full Frame Film festival the network has reportedlyrefused to carry an advertising spot, claiming it would be disparaging to fastfood restaurants.

The picture's distributors Roadside Attractions and Samuel GoldwynFilms were preparing to place television ads before the picture expands overMemorial Day Weekend.

However it is understood MTV executives rejected the spot - which accordingto the distributors has already aired on CNN, Comedy Central and other networks- and demanded changes.

IDP representatives said MTV executives were adamant that even ifchanges were made they would not air the spot "in the same pod" as a fast foodcommercial.

Despite repeated efforts to contact MTV representatives at thecompany's New York offices they were unavailable for comment.

Super Size Me won the director's award at Sundance andcurrently ranks 10th in the US charts on a running total of $2.9m as of May 25.