startup/shutting down screen showing Xubuntu's bootsplash and not Ubuntu's

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http://askubuntu.com – I installed Xubuntu-desktop over Ubuntu 11.10 and now when I shutdown my system or start it up, I see Xubuntu's bootsplash screen. Is simply removing the plymouth theme for Xubuntu corrects the problem and brings back default Ubuntu's? I don't want to 'experiment' thereby breaking something during the process. (HowTos)