Subtitles - Different font size in different video file formats

[Orgy]

I`m not sure if this post should be here in the bug section or not, but anyway - here`s my problem:
I noticed that different types of video formats shows different size of the fonts although I have always chose size 16.
In AVI, MKV, OGM is everything OK while in MPG, ASF, WMV the fonts are a lot bigger.
In addition, the basic look of the subtitles changes and in some cases the subtitle timing isn`t right.
Any idea why?

[NeTo]

I don't know what could be causing so much problems with subtitles. I have only mpg and avi files right now, so I can't do much testing.

Maybe you can try to use a codec to render the subtitles, like DirectVobSub or FFdshow.