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I have install Ubuntu & GNOME (with minimum possible number of packages). I can login and do anything I want. However, there is a strange thing: Whenever I log in, I see this message:

The panel encountered a problem while loading "OAFIID:GNOME_FastUserSwitchApplet"
Do you want to delete the applet from your configuration
[Don't Delete] [Delete]

If I press [Delete] then the error won't be shown anymore. However, for every newly created account, the message is shown again (created using sudo adduser user_name).

Since I clone this OS into several virtual instance, and create new account on these instances; I wonder if there is a way to configure my Ubuntu so that newly created user doesn't have to see this annoying message?

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Via the Ubuntu Forums:

Please try to reinstall gnome-applets and gnome-applets-data.

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Hmm, I tried it before and it didn't solve the problem. I tried again and it still doesnot solve the problem. Do you know a way to troubleshoot it? (Like which log to view) – Phuong Nguyen Jul 20 '10 at 2:31
Can I get some more information; for instance, what applets do you have running on your taskbars? It sounds like these might be the culprit. – jrc03c Jul 20 '10 at 13:10
I install fast-user-switching-applet and the message gone away. Probably ubuntu default configuration assume that this applet must be installed. – Phuong Nguyen Jul 22 '10 at 2:47

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