(freezing when moving edits when having multiple tracks being one of them)
andraz, just for you to have a small feedback on this, since i've been pretty much working exclusively with cinelerra and depend on it to be very stable, i've been using a rafael2k debian-stable package for version v2.0, which is the most stable release i've seen. especially due to what you mention above - it doesn't happen there. here in brazil, even though i do have an hdv camera, about 95% of everything being done here is still dv, so v2.0 is already very fine to do about anything (usually, people get surprised when I say that, but also usually the don't edit videos that last longer than 5min). i said that to say that i don't program (been trying to help on other fronts), so what i'm going to say is based simply on a 'feeling': from what i got of cinelerra the 2.1 versions I used, it seems that every playback is being done by openGL, no matter what option you choose on preferences (X11, XV, etc). even though we had many machines on hand to test this when I was working closer to the estudiolivre.org 's government-funded branch, all those machines' video cards did not support openGL 2.0. so editing videos there (on 2.1) became unthinkable, because we couldn't work around this freezing issue - playback then would be very very slow (on DV videos, we only worked with DV there). we were installing jahshaka on those machines as well and jahshaka would present the very same problem - very slow playback for pretty much everything. unless, of course, if this freezing problem would happen even in case you chose X11-XV, which then would mean it was a more general issue than just involving openGL - as i said, this is just a feeling I have, based on some months watching this happening and trying to figure what that could be; but it was interesting to see jahshaka and cinelerra presenting the same problem. my (personal) video card now supports opengl 2.0 so i'll update the cv-cinelerra and jahshaka on my debian-unstable partition as soon as i have time to see if i can give any more feedback on this.
