There isn’t a line break at the end of wp-config-sample and MY RSS feeds aren’t invalid. It’s probably something you did while you were editing it.
Before you posted the above did you check?
line 76 is ‘?>’ and ends in a line break followed by line 77.
How do you know your feeds are valid? did you use a validator? http://feedvalidator.org/
I found this error with a clean install and have even checked it again by re downloading it to make sure I did not invalidate in the process of instalment.
“Check your wp-config.php file for blank lines outside of <? and ?> bracketed sections.”
http://feedvalidator.org/docs/error/WPBlankLine.html
This is issue is not resolved.
He is correct – this has been this way for a while – even on the 2.8-bleeding nightlies
just downloaded a fresh zip – same thing
However, my feeds do validate fine but I’ve had to fix several folks that didn’t.
As far as I know – this is a known deal.