Graham Perrin wrote With <http://n2.nabble.com/The-Guiding-Light-Message-Board-f529340.html> as a starting point, the bug may bite topics with any of the following characters in their subject line: : (colon) (example) ' (apostrophe) (example) ! (exclamation mark) (example) ( or ) (opening or closing parentheses) (example) $ (dollar) (example) Maybe not bugged: ? (example) ; (example) / (example)