A quick note to tell you that I am currently trying to port Kdenlive to KDE4/QT4.
This means I have to rewrite some large parts of the code. I hope to achieve a better MLT integration that will make the code easier to understand and hopefully attract new developers.
It also means that I will not pay enough attention to the current bugs, since I hope at least some of them will be fixed in the rewrite process. I am developing the KDE4 version in the branch/kde4 folder from svn.
If you want to test and follow development, you can get it from:
svn co https://kdenlive.svn.sourceforge.net/svnroot/kdenlive/branches/KDE4 kdenlive
Currently, you cannot do anything useful, only the project view and clip monitor work. I hope to have all basic features working in something like one month.