I checked again after exiting and opening Firefox (x86) v43.0.4, and repeating again was the phenomenon described in my initial item above.
This 32-bit version of Firefox and the 64-bit version, were downloaded from https://www.mozilla.org/en-US/firefox/all/#en-US. After running Uninstall on the single-line, x86 Mozilla Firefox item in Windows 8's Programs and Features, and observing that no trace remained in Programs and Features, ran the downloaded file and installed Mozilla Firefox (x86) v43.0.4 in Windows 8's C:\Program Files (x86) folder branch, where it presently is seen to be residing, as shown in Windows Explorer.
Exiting the 32-bit Firefox, the downloaded Firefox (x64) v43.0.4 was installed into the C:\Program Files folder branch. (This is the branch for 64-bit programs, as you know.) When opened and set to the same URLs as above ( namely, to http://www.intel.com and then to http://www.intel.com/content/www/us/en/support.html ), the same phenomenon repeated, every time. This message is being written in Firefox (x64) v43.0.4. In Firefox add-on NoScript v126.96.36.199, I have white-listed both intel.com and intel.net in both browsers, and have Allowed the Omniture tracker in Ghostery v5.4.10, the only tracker used on that page, apparently.
<<<< Went offline for several hours, since about 5 PM until the main Debate started on Fox Business (on cable TV).
NEW! Maybe this is "it."
In the Options dialogbox of NoScript, in its tab labeled Advanced, subtab HTTPS, sub-subtab Permissions, I just now changed the option from Always to When using a proxy (and I have not been using a proxy - don't have TOR or any other anonymizer or proxy installed). But, returning to the Intel® Support page on http://www.intel.com., the phenom did not repeat. ... Ok, setting it back to Always, refreshed the page and the phenom appeared again. This is in the x64 Firefox. ... Checked the box for Allow HTTPS scripts globally in HTTPSdocuments. Refreshed the page again and the phenom appeared again, so, that didn't help. Removed that checkmark and changed the setting back to When using a proxy. and OK'd to close the options dialog (OK'd, every time i changed one of these settings, of course.) and, no problem! This is the x64 browser. Will want to prove it with the x86 brwser, but I am hopeful that this information will be useful to Firefox+NoScript users from now on. << The Advanced Option that I described, the HTTPS tab, should not be set to Always. >>
Please let me know what you think. And I will check out the x86 browser tomorrow, if all goes well, and will mark this thread answered if it is all OK.
<< H-P Pavilion g7 Notebook PC, Intel inside™ CORE™ i3-3110M, 6 GB RAM, Windows 8 (x64) v6.2.9200 >>