Howto reset a Gnome user profile??

[Senectus .]

It looks like I've broken my Gnome profile and now I can't log into
gnome.. what do i need to delete in my profile to "reset Gnome" back
to what it would be by default (not including firefox etc)
--
Ubuntu Breezy 5.10
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liability, direct, indirect, consequential, or incidental, that may
arise from the installation of this brick into your building." - PJ
Groklaw
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