Custom Profile Pics with wrong image type

[squishi]

All profile pics are gifs. I think I asked this before, but can't remember the answer.

So what's the reason why vbulletin uses the wrong filetype on its images?

Can't I just change the type in the script somewhere?

[squishi]

I would really be interested to hear why vbulletin creates all images as a GIF - that is with an incorrect image type. Makes no sense at all.