gdebi-gtk crashed with error in finish_dpkg()

[UndiFineD]

Binary package hint: gdebi

when installing ubuntu tweak

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: gdebi 0.6.2
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic-pae
Uname: Linux 2.6.31-14-generic-pae i686
Architecture: i386
Date: Sun Aug 22 00:54:29 2010
ExecutablePath: /usr/bin/gdebi-gtk
InterpreterPath: /usr/bin/python2.6
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gdebi-gtk --non-interactive /tmp/hostname-tweak_0.5.5-1~lucid1_all.deb
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.utf8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/gdebi-gtk', '--non-interactive', '/tmp/hostname-tweak_0.5.5-1~lucid1_all.deb']
SourcePackage: gdebi
Title: gdebi-gtk crashed with error in finish_dpkg()
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/GDebi/GDebi.py", line 608, in finish_dpkg
     lock.release()
 error: release unlocked lock
UserGroups:

[UndiFineD (k.dejong)]

bug #630784 is marked private ....