Pressing ALT+F2 Dash triggers a bug, maybe via searching the history

[Sascha]

1) Ubuntu 12.04 LTS Beta 1

2) unity: Installiert: 5.4.0-0ubuntu2

3) I wanted to start minecraft via 'java -jar minecraft' as icon in my Dash, after pressing ALT+F2

4) I could start minecraft, but a bug, that appeared again, that I reported a few hours ago. I didn't start synaptic in this session, indeed, indeed I just started the PC just 5 minutes ago. Instead, the Unity Dash must have called up in background (in going to the history - whatever) the terminal command again, that lead to bug https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/861258
If that happens more often, there might be the risk, that the Dash becomes unsuable, the more often, I find / hunt / report bugs.

Hot wo reproduce it?
Try to get the bug #861258 by entering
   sudo add-apt-repository ppa://dallen.wilson/ultima
in a terminal and report that bug (so you can describe yourself to it).
Restart you're PC
Login to Unity
Press ALT+F2 - and click on one of you're symbols, that show older commands, but do it after some seconds, 5-10.
Shortly after that - the bug reporting tool should fire up and will inform you about "ValueError in raw_decode(): No JSON object could be decoded"

I guess, it should work with any other bug too.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python-software-properties 0.82.4
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic i686
ApportVersion: 1.94-0ubuntu1
Architecture: i386
CrashCounter: 1
Date: Sat Mar 3 15:04:05 2012
ExecutablePath: /usr/bin/add-apt-repository
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/add-apt-repository ppa://dallen.wilson/ultima
PythonArgs: ['/usr/bin/add-apt-repository', 'ppa://dallen.wilson/ultima']
SourcePackage: software-properties
Title: add-apt-repository crashed with ValueError in raw_decode(): No JSON object could be decoded
UpgradeStatus: Upgraded to precise on 2012-02-28 (3 days ago)
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