Eclipse stuck at 100% cpu usage after updating inside Eclipse

[NoBugs!]

After updating Eclipse (from the Help menu in Eclipse), and restarting, it sticks at the start of the loading screen, "Loading workbench". CPU 100%, restarting the process doesn't help.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: eclipse (not installed)
ProcVersionSignature: Ubuntu 3.5.0-16.24-generic 3.5.4
Uname: Linux 3.5.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
Date: Sat Sep 29 17:53:13 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: eclipse
UpgradeStatus: Upgraded to quantal on 2012-09-15 (14 days ago)

[NoBugs! (luke32j)]

I finally seem to have fixed it by starting up new workspace, then going to updates, not all would install because of permissions problem, then I ran it as root and it updated. Now Android developer tool doesn't work, unfortunately.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[bwanamarko (bwanamarko)]

Same for me, I renamed my old indigo workspace and let juno make a fresh one, then compared the two. I think that the cause of this issue arepackages installed from p2 repositories, like PyDev may make the workspace incompatible?

[bwanamarko (bwanamarko)]

oops sorry, eclipse 3.8, *not juno*, sorry for the typo. My point is that just as @NoBugs! (luke32j) wrote, that Android SDK tool didn't work when you replace your workspace, and eclipse 3.8 doesn't work with the previous workspace.

[bwanamarko (bwanamarko)]

weird, now it works with my old workspace, after I had re-installed pydev, and it works with all of my old workspaces. But it's true, several of the plugins that were previously installed are missing including the Android SDK. bummer