I'm getting the same thing...looks like a problem with the connection of the URL and the respective registration ID:
When clicking on the ''See all of my Forum posts'' link, I am taken to http://www.cnet.com/5306-4_1-1-1.html?type=3, when it should actually be http://www.cnet.com/5306-4_1-1-2.html?type=3&ursRegID=19699436435418452510710626583211. (The above link is for your posts, Steve.)
I guess it's hard for a tech to fix something without breaking something in return. (Gotta maintain that balance.)
If I click on another users profile and continue to where it's to show their older posts, it begins to show my own once it gets past the original list of three. Anyone else see this??