update-apt-xapian-index crashed with DatabaseLockError in __init__(): Unable to get write lock on /var/cache/apt-xapian-index/index.2: already locked

[Gert]

The system dit it its zelf.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-xapian-index 0.41ubuntu6
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Mon Apr 18 16:28:35 2011
ExecutablePath: /usr/sbin/update-apt-xapian-index
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/sbin/update-apt-xapian-index --force --quiet
ProcEnviron:
 PATH=(custom, no user)
 LANG=nl_NL.UTF8
PythonArgs: ['/usr/sbin/update-apt-xapian-index', '--force', '--quiet']
SourcePackage: apt-xapian-index
Title: update-apt-xapian-index crashed with DatabaseLockError in __init__(): Unable to get write lock on /var/cache/apt-xapian-index/index.2: already locked
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Bilal Shahid (s9iper1)]

affected with this dont know what happen. and than the apport said its already reported and redirect to this bug.

[Kamil (lampshade-t)]

Ubuntu 12.04 beta1, 31 March 2012
Automatic updates turned off. I update and upgrade my system via apt-get update && apt-get upgrade && apt-get dist-upgrade.
While the problem occurs, I don't been updating my system. I have 640 MB of DDR Ram, RAM doesn't have any damages.