Yesterday night I reinstalled the SMF software and reinstalled some of the packages that I am using. I also replaced some of the packages with hopefully better alternatives. As a result the URLs that the forum was generating were changed. I noticed in Google Reader this morning 20 new entries for the Blog. The reason is that since the URLs are slightly different now RSS readers think that those are new items.
The old links should work as well and redirect you to the new location(s).