Guys, thanks for the assists so far.
My research of the www.infopop.com
forums thus far has only told me that there are cookie related problems. However, Infopop exdplains that they use CGI.pm, the "simplest, cleanest cookie implementation... yada yada yada" (in short, they don't believe it's a server side problem)
Normally, I'm running off of Chinese Windows 98 using IE 5.0 (I haven't checked the release number yet) and NS 5.something. I regularly use several instances at a time, so I will be mindful of this when I test again.
It seems you've realized this out already, but I'll mention this anyway: the Non-registration required forums (currently Open Forums and Teaching in TW) are always viewable, but the problem lies in posting new messages or replies.
One thing I could do is upgrade the forums to the latest version (v 6.2 has been released), but I risk losing many of the mods I've put in place: Who's Online, various little details, etc.
For now, I'm inclined to keep looking/hoping for a solution for this problem and only consider an upgrade as late as August (I'll have a break in my school schedule then [img]images/smiles/icon_smile.gif[/img]