Invalid XHTML caused by taxonomy delimiters

Ithought I would just check one of my sites which uses your theme to ensure it is valid. Unfortunatly it comes back with an error. The error shows that the taxonomy printing is incorrect. To fix it I have removed line 349 and changed line 352 from $output .= implode(", ", $links); to $output .= implode(" ", $links);. This then churns out valid code. I have not check what, if any affect it has any where else though.

Nick