99 or 89 min?

I just saw this movie and its duration was 89 min. But IMDB shows it as being 99 min., while at the same time it doesn't mention anything about the existence of different versions.

So, what's going on here?

FTR, the version I saw was released by a movie magazine here in Greece, complete with extras and an introduction by one of our leading film-critics. So I highly doubt that they released a truncated version of this movie (for starters, if they did anything like that there would be a huge backlash among readers).