kdenlive won't start

Can somebody please help me to get kdenlive working on my system?

When I try to start kdenlive from either the terminal or the gui I get a brief flash of a dialog or splash screen (it's very fast) and then nothing. On the terminal it just returns to the command prompt with no messages of any kind.

I'm using kubuntu 12.04 with kde 4.9 from backports.

I started with the standard ubuntu repository when that didn't work I did the following which I found in a post in this forum:
1) remove all MLT / Kdenlive packages:
sudo apt-get remove kdenlive libmlt* melt
2) make sure you have added the sunab repository:
sudo add-apt-repository ppa:sunab/kdenlive-release && sudo apt-get update
3) re-install kdenlive:
sudo apt-get install kdenlive

Both standard repository and sunab give me the same result.

after sunab apt-cache policy gives me:
Installed: 0.9.2-0ubuntu0~sunab~precise2

Please help me trace this.

Bumping as i have the same issue for as long as i can remember. Kdenlive starts only as root. Attempting to run as user gives a flash of a wizard window.
Here is what shows on terminal:

$ kdenlive
detected format: YUV 4:2:2 (YUYV): YUYV
Size: 640x480: 1/30,
Size: 320x240: 1/30,
Size: 176x144: 1/30,
Size: 1024x768: 1/7,
Size: 1280x720: 1/7,
Size: 1280x1024: 1/7,
Size: 1600x904: 1/5,
Size: 1600x1200: 1/5,