Dragon Player hangs on start (incl. plasma desktop)

[Christian Schürer-Waldheim]

When I start Dragon Player, it hangs for 1-2 minutes (no windows visible, but process is running in background). Additionally, the plasma desktop hangs then too (e.g. no task switching possible) - running applications (e.g. firefox) work without problems.

Tracing the Dragon Player process lets me assume that the problem/hang is related to the application menu (I'm using the meunbar plasmoid). When I start the application with QT_X11_NO_NATIVE_MENUBAR=1 set, it comes up immediately, so this is one more evidence to me that it might be related to the menubar.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: dragonplayer 4:4.8.3-0ubuntu0.1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Sun May 27 20:57:44 2012
ExecutablePath: /usr/bin/dragon
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 SHELL=/bin/bash
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LANGUAGE=
SourcePackage: kdemultimedia
UpgradeStatus: Upgraded to precise on 2011-12-27 (152 days ago)