I have just migrated to Feedburner for my RSS feeds. In order to smooth the transition, I have implemented server based redirects so all existing feeds should work properly with no change. If you experience problems, I suggest that you re-subscribe using the RSS urls.
Finally, I also just realized that my RSS feeds only included the title of the articles. This has been fixed and now the RSS feed will include the complete content of each article.
Feel free to commment with any problems and/or issues.