[CentOS] Browser window problems (previously discussed) - details?

For those of you who have reported here about problems with your
browser windows suddenly going away in Firefox and/or SeaMonkey:

Please send me all relevant hardware and software configuration
details about your Mozilla installation as well as your version of
CentOS.  I am looking into a theory about why this might be happening
and need more input.

You can send these privately directly to me rather than the whole list
if you prefer.  I only need your h/w and s/w configuration information
(what versions you are running on what kind of hardware).

Thanks.

mhr