It seems that it is links that are broken. I can find the posts by manually advancing the URL by number for example:
http://adriansundeaddiary.com/blog.htm?b=&tagged=247th
works. But if I hit next at the bottom of a page, or use the archives to go to one by date, for example:
http://adriansundeaddiary.com/pt/January-20th-entry/blog.htm
it comes up as "Sorry, but there are no blog entries to display."
I'm wondering if it has to do with the fact that the url has no year modifier in it and there was a January-17th 2011 and January-17 2012 entry?