Figured it out but I really don't know why this software has this issue... I run my own server and have fairly standard entries in my hosts file (this is on Slackware Linux). The first time I installed this whole thing the package could not identify "localhost" as my MySQL host; I had to edit my hosts file and insert the name of my dummy domain (just horsing with it on my intranet) with the local NAT number as the associated IP. This time, it installed fine with "localhost" in the config portion so I didn't make that edit. However, it did what I've desribed as far as finding the forum posts for the front page.
I just edited my hosts file - as I did before when I couldn't get it to connect to MySQL - and now the forum deal, on the front page, is working. It's some sort of odd DNS issue. I don't know enough about the code in this thing to have a clue as to why this would be the case. I run OScommerce and a bunch of different packages, of this type, and have never seen this happen.....