login to feedburner and check the troubleshooting tab - re-ping or there is a re-synch option

thanks, will try pinging them now.

didn't work. And syncing threw errors. The funny/sad thing is, the site settings haven't changed at all the last couple of months

not sure then

Max do you see the latest post when logged into Feedburner - Optimize - view 'your feed'?

no, I can't. They say there is a problem. Shall I try publishing a new and different one?

thanks for the help Brian. I just raised the issue at FeedBurner. Will let you know their response.