I did a site for a client (www.consultingbyrpm.com) and the client is very happy. The site was finished six months ago. A month ago he came to me and asked why all of a sudden his sidebar went missing. He didn't notice it at the time, but his footer was missing as well, and the links to older posts was gone.
I added code to get the sidebar in twice, and it seemed to be a temporary fix. But now my client really wants to get the ability to go to earlier posts back now that he is getting much more traffic.