I know this may be a long-shot but you never know.
My rss feed was working but I hadn't checked it for a while and now its not.
I am getting the following error:
Warning: Cannot modify header information - headers already sent by (output started at /home/meme/public_html/sailingholiday/wp/wp-blog-header.php:1067) in /home/meme/public_html/sailingholiday/wp/wp-rss2.php on line 19
running wp 1.2.1
Any ideas appreciated