Thank you a lot, JEEB. I was experiencing some problems with segmented op starting before the intro part was finished, even using IDR frames on those. It turned out to be an audio problem. I used to trim the audio with Adobe Audition. Trimming it with AviSynth solved everything.
Thank you for the lead ;]
Just a tip for Windows users:
Code:
mkvinfo.exe -s filename.mkv | find "I" > IDRframes.txt
works just as fine as grep (and that'd avoid having to install it)