I have removed a bunch of folders from my inbox on the remote hosted server. Almost all the folders are gone, however, there are several that, when refreshed, go away, but when you go into the inbox, then go back to folder view, the folders are back? Can't seem to purge them for good.
Samsung Fascinate SCH-I500.ED04
Android Froyo 2.2
K-9 Mail v3.802