radiotray crashed

radiotray crashed with GError in notify(): GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Notifications was not provided by any .service files

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: radiotray 0.6.4-1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic-pae 3.0.4
Uname: Linux 3.0.0-11-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu1
Architecture: i386
Date: Thu Sep 22 02:57:25 2011
ExecutablePath: /usr/bin/radiotray
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/bin/radiotray
ProcEnviron:
 LANG=sk_SK.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/radiotray']
SourcePackage: radiotray
Title: radiotray crashed with GError in notify(): GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Notifications was not provided by any .service files
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare