plasma-desktop crashed with SIGSEGV in __kernel_vsyscall()

[halw]

When attempting to add a new default panel a crash occurred and the new panel did not appear.

Running Kubuntu 11.10 from live cd.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: plasma-desktop 4:4.7.1-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CasperVersion: 1.287
Date: Tue Nov 1 23:19:03 2011
ExecutablePath: /usr/bin/plasma-desktop
LiveMediaBuild: Kubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcCmdline: /usr/bin/plasma-desktop --nocrashhandler
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x222416 <__kernel_vsyscall+2>: ret
 PC (0x00222416) ok
 destination "(%esp)" (0xbfde0aa0) ok
 SP (0xbfde0aa0) ok
 Reason could not be automatically determined. (Unhandled exception in kernel code?)
Signal: 11
SourcePackage: kde-workspace
Stacktrace:
 #0 0x00222416 in __kernel_vsyscall ()
 No symbol table info available.
 Cannot access memory at address 0xbfde0aa0
StacktraceTop: __kernel_vsyscall ()
Title: plasma-desktop crashed with SIGSEGV in __kernel_vsyscall()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Stacktrace:
 #0 0x00222416 in __kernel_vsyscall ()
 No symbol table info available.
 Cannot access memory at address 0xbfde0aa0
StacktraceTop: __kernel_vsyscall ()

[Harald Sitter (apachelogger)]

Unfortunately the data is inconclusive so we are unable to conduct further investigation. If this bug is reproducible please make sure that the package kde-workspace-dbg is installed and report a new bug or append a new backtrace to this report.