I played around with the recent csoundqt and it was quite stable. I only managed to crash it ones, when I started a csd without jack running. Maybe there could be some kind of checks for running processes before the launch (just a thought)?
I also took over the arch linux package for csoundqt because nobody seemed to be updating it, so now there is a package with the new name available... :) There was python2-qt in the package build file listed as required dependency, so I was wondering what does one miss, if he doesn't have it available?
..and does anybody know if this: https://aur.archlinux.org/packages.php?ID=53038 is the needed dependency for the build with pythonqt stuff?