Which is the best OS for Kdenlive?

Hi, I've been using Kdenlive for about half a year (on ubuntu 9.10 and now on 10.04) and have experienced a plenty of bugs, mostly with audio playback. I managed to solve the pulsaudio vs alsa issue on 9.10, but it not on 10.04 yet.It crashes often unexpectedly. It may be a stupid question, but I'm really curious whether or not it makes a difference if you run Kdenlive on Kubuntu, because of the Kde environment?
Thanks