I recently updated the mysite module and that broke those pages. 'mysite'?
This is available through the 'My V is for Voltage Community' in the navigation menu/sidebar. The functionality lets you build a page that tracks just the content that you want to look at. There are links all over the site that help access this feature, and the page is rather customizable.
After studying the code last night .. (y'all might have seen messages like 'leaving mysite_load_includes', that was me) .. I found a solution which works. I also filed a bug with the mysite author and we'll see what kind of solution he thinks is better.