It appears that the .htaccess file needs to be modified. So much for a "seamless" conversion to secure pages! Looks like that won't happen until next week some time. But feel free to post as new posts are automatically referenced properly using the https:// secure links. It's just some old links that reference other posts within the forum that aren't converting automatically.
I've also noticed that some of the in line images (particularly the old images from TinyPic that are now locally hosted) don't show up until one clicks the refresh button on ones browser. Not sure if this is related to the https conversion, but probably.
Also, just in case anyone else has the same issue, in modifying some access files I discovered that I could no longer load the forum pages, and then found that I had to "clear the cookies" by doing a <ctrl> <shift> <del> to clear the cookies, which fixed that problem.
So much excitement for a Friday!