How do you revert back to ubuntu from kubuntu?

[Senectus .]

I'm tired of the KDE desktop and want to go back to old reliable..
whats the best way to switch back?
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Ubuntu Breezy 5.10
CNet News.com: So that would be the philosophical difference between
Microsoft and what Google is up to at this point?
Bill Gates: Well, we don't know everything they are up to, but we do
know their slogan and we disagree with that.
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