Unity disappears after launching Netbeans 7.4 beta

[NoBugs!]

Unity disappears after launching Netbeans 7.4 beta, on 12.04. Top and left panel aren't visible, although I can get a tooltip of the launcher, hovering where it should be, and I can launch apps.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.20.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-52.78-generic 3.2.48
Uname: Linux 3.2.0-52-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,gnomecompat,regex,session,wobbly,animation,mousepoll,imgpng,ezoom,unitymtgrabhandles,fade,workarounds]
Date: Sun Aug 25 22:38:31 2013
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no username)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-09-05 (354 days ago)

[Andrea Azzarone (azzar1)]

Can you still reproduce this problem?

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for Unity because there has been no activity for 60 days.]