plasma-desktop crashed with KeyError in update_label(): 'media.name'

[TequilaMex]

it notify me about plasma errors on every login

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: plasma-desktop 4:4.8.1-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Sat Mar 31 09:49:50 2012
ExecutablePath: /usr/bin/plasma-desktop
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcCmdline: /usr/bin/plasma-desktop
ProcEnviron:
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: kde-workspace
Title: plasma-desktop crashed with KeyError in update_label(): 'media.name'
UpgradeStatus: Upgraded to precise on 2012-02-19 (40 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Harald Sitter (apachelogger)]

Hi there!

Thanks for reporting this bug! Your bug seems to be a problem with the KDE program itself, and not with our KDE packages. While we appreciate your issue, it would be better if it was tracked at https://bugs.kde.org, so that the KDE developers can deal with this speedily and have direct communication with you as the reporter for more effective debugging.

Thanks!