The cache directory contains the following:

sf/attachments/<file_id>
	Raw attachments as downloaded from sourceforge by sf2bz

sf/artifacts/<atid>/<aid>.html
	Tagsoup detailed artifacts as downloaded from sourceforge by sf2bz

sf/users/<user_id>.html
	Tagsoup user profiles as downloaded from sourceforge by sf2bz

attachments/<file_id>.xml
	Attachments converted to xml by sf2bz

artifacts/<atid>/<aid>.xhtml
	Conversion of detailed artifacts to xhtml by tagsoup

users/<user_id>.xhtml
	Conversion of user profiles to xhtml by tagsoup