i've fixed the problem with the blank line. now firefox is complaining about ampersands (&) in various places:
Quote
XML Parsing Error: not well-formed Location: http://www.jakchat.com/forums/cache/rss12.xml Line Number 5, Column 48: <title>Gentlemen, Revolutionaries, Scholars & Bules</title> -------------------------------------------------------------^
unfortunately, many of my forum names use "&" in theor names!