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What are the exact names of the files i need to delete in my Profile Folder, before i downgrade back to FF 3.6

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i am downgrading back to FF3.6 from FF 4.0, I know there are several folders i need to delete in the "Profile Folder" after uninstalling FF 4.0, can some one please tell me the names of these folders

i am downgrading back to FF3.6 from FF 4.0, I know there are several folders i need to delete in the "Profile Folder" after uninstalling FF 4.0, can some one please tell me the names of these folders

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It is not essential that anything is deleted, but I recommend deleting extensions.cache, extensions.ini and extensions.rdf - Deleting those files will force Firefox to rebuild the list of installed extensions and this is useful in case there were any extensions updated when you had Firefox 4 installed.

I also recommend deleting localstore.rdf, that file stores details of toolbar customizations, deleting it will reset the toolbars to the Firefox 3.6 defaults, removing the changes made by Firefox 4.