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So, I sea This tutorial, and I exectued this line in my terminal : sudo add-apt-repository ppa:lubuntu-desktop/ppa & sudo apt-get install lubuntu-desktop and my left-side panel changed abit, while the Dash Home changed to become like so : ! help !

How can I change to the ubuntu default style or ppa ! because whene I run this : sudo add-apt-repository ppa:ubuntu-desktop/ppa it gives me the follwing notice :

gpg: requesting key A1231595 from hkp server gpg: key A1231595: "Launchpad PPA for Ubuntu Desktop" not changed gpg: Total number processed: 1 gpg: unchanged: 1 does this mean that the ubuntu ppa isn't changed or what ??

Please, help any help would very appreciated :)

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Install ppa-purge in your system

sudo apt-get install ppa-purge

Use ppa-purge to remove the PPA you installed

sudo ppa-purge ppa:lubuntu-desktop/ppa

Make sure that lunbuntu-desktop is not installed any more and try to remove further dependencies that the package installed

sudo apt-get remove --purge lubuntu-desktop

Re-install ubuntu-desktop let the system install any missing packages

sudo apt-get install --reinstall ubuntu-desktop

What the first command does is install ppa-puge, its a small tool that removed PPAs from your system and attempts to install the previous version packages.

We are going to use it to remove ppa:lubuntu-desktop/ppa and any packages that you installed from that PPA with the second command.

The third command will remove the package lubuntu-desktop and any dependencies it installed in case ppa-purge missed any of those.

With the fourth command we will install ubuntu-desktop and any missing packages.

After this is all done you should log off and back on and hope that your desktop has been restored to normal.

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That actually didn't do it ! Any more thoughts ??! – Alfa9Dev Apr 11 '12 at 18:27

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