Kdenlive: Project monitor displays something else than the output will be, when using custom Profiles

Binary package hint: kdenlive

I was trying to create a 16:10 aspect ratio profile. But I can't because the program is difficult to use, if you're "blind". The output file looks how it should, but the Preview area displays not correctly, it distors the view in one of the dimensions, adding black borders.

I'm quite desperate about this, thanx

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: kdenlive 0.7.7.1+svn4571-1
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic i686
Architecture: i386
Date: Mon Jan 24 02:12:18 2011
ExecutablePath: /usr/bin/kdenlive
InstallationMedia: Zorin OS 4 - Release i386
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kdenlive
XsessionErrors:
 (polkit-gnome-authentication-agent-1:1790): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nm-applet:1793): Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion `private->update_and_descendants_freeze_count > 0' failed
 (process:2340): Gtk-WARNING **: Locale not supported by C library.