bzr crashed with ShortReadvError in _seek_and_read(): readv() read 0 bytes rather than 42 bytes at 0 for "b4ed052a6b48b8b8e5a92e5c2802e203.pack"

[mmoeckli]

when I type the command "bzr commit" , there is an error

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: bzr 2.3.1-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
BzrDebugFlags: set()
BzrVersion: 2.3.1
CommandLine:
 ['/usr/bin/bzr',
  'qsubprocess',
  '--bencode',
  'l6:commit2:-m17:letze anpassungen12:benutzer.phpe']
CrashDb: bzr
Date: Fri Jun 24 22:01:06 2011
ExecutablePath: /usr/bin/bzr
FileSystemEncoding: UTF-8
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
InterpreterPath: /usr/bin/python2.7
Locale: de_CH.UTF-8
PackageArchitecture: all
Platform: Linux-2.6.38-8-generic-pae-i686-with-Ubuntu-11.04-natty
ProcCmdline: /usr/bin/python /usr/bin/bzr qsubprocess --bencode l6:commit2:-m17:letze\ anpassungen12:benutzer.phpe
ProcEnviron:
 LANGUAGE=de_CH:en
 PATH=(custom, user)
 LANG=de_CH.UTF-8
 SHELL=/bin/bash
PythonVersion: 2.7.1
SourcePackage: bzr
Title: bzr crashed with ShortReadvError in _seek_and_read(): readv() read 0 bytes rather than 42 bytes at 0 for "b4ed052a6b48b8b8e5a92e5c2802e203.pack"
UpgradeStatus: Upgraded to natty on 2011-04-28 (56 days ago)
UserEncoding: UTF-8
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare saned users vboxusers