from time to time Sage tells me about persistent XML Syntax Errors in some RSS feeds. As I am the administration of these feeds I'd like to check what's wrong with them. How do I check for XML Syntax Errors that Sage is complaining about? BTW with the Opera RSS Feed Reader everything works fine (but I don't like it).
I'm using Sage 1.4.12, Firefox 3.6.19 and Aptosid/Debian GNU/LInux