Feedburner RSS feed problems

I seem to be having problems with my RSS feed which doesn't appear to be automatically picking up new posts here. I'm having to go to Feedburner and update manually. If anyone's newsreader is not picking up B2fxxx readings as regularly as previously could you let me know. It's certainly a problem with the Firefox Sage newsreader and it would be useful to see which others it affects too. Thanks.