When I pick Add New Panel > Default Panel from the plasma menu in Oneiric, A new panel appears, and then the screen goes black for a few seconds, then everything comes back, with the panel gone. The first time I did this, I got a message box telling me a segfault had occurred, but not on other times.
ProblemType: Bug
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 x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Sun Oct 16 16:35:37 2011
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
ProcEnviron:
LANGUAGE=en_GB:en
PATH=(custom, user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: kde-workspace
UpgradeStatus: Upgraded to oneiric on 2011-10-10 (5 days ago)
Medium -> Moderate impact on core (Kubuntu) application