From memory, it has always been understood that your "other poster" qualifies the post by stating that the information is as a result of communication with the USPTO.
Please read this post, presented in its entirety, and show me where any source is indicated:
A certificate has been issued 06/17/08.
That's as much as I know. I'm trying to get an answer on the 6598148. I'll post it as soon as I get it.
The opening line is a statement of "fact", the validity of which was questioned on this forum within minutes.
Further, as this post still remains, despite a forum leader posting subsequently, as follows,