"Minimum picture dimensions" values are overriden by "profile picture preset"

Hi,

I really like this module. It's absolutely helpful.

I created 2 imagecache presets:
1. avater_profile: 240x200px (width x height)
2. avater_posts: 50x50px

I set "avater_profile" as "profile picture preset" and "avater_posts" for "comments" and "default".
I also set the "minimum picture dimensions" for pictures to 240x200px.
Everything worked fine so far.

Now I had to set "avater_posts" as "profile picture preset". With this action the 240x200px from the "minimum picture dimensions" are ignored and users may upload picture in the dimensions of 50x50px (avater_posts).

I think it's a critical bug because the "minimum picture dimensions" should not be overriden by any imagecache preset that has been chosen for the "profile picture preset".

I'd really appreciate if we could fix this.

Best regards and many thanks for your great work! :)
Stefan