package_hook crashed with IOError in write()

Binary package hint: apport

trying to report a bug after an upgrade, there came this crash also.

ProblemType: Crash
ApportLog:

Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/share/apport/package_hook
InterpreterPath: /usr/bin/python2.5
NonfreeKernelModules: nvidia
Package: apport 0.134
PackageArchitecture: all
ProcAttrCurrent: unconfined
ProcCmdline: /usr/bin/python /usr/share/apport/package_hook -p python-zopeinterface -l /var/log/dist-upgrade/
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/apport/package_hook', '-p', 'python-zopeinterface', '-l', '/var/log/dist-upgrade/']
SourcePackage: apport
Title: package_hook crashed with IOError in write()
Uname: Linux 2.6.28-8-server i686
UserGroups: clamav gnokii vboxusers