Sanity Clause wrote:

I do indeed have version 6.0.6.401, and PDFs open just fine
(I tested) either *in* Firefox, in an external "instance"
of AR, or even in Foxit.

What does that have to do with the problem that jaugustine had?

Flash (ver 10.1.102.64) is also working fine (I often visit Youtube
and others).

You're way behind the times.

I have flash version 11.6.602.171 installed on my win-98 systems.