Strange values in Accept-Language header?

[Jeff Epler]

On Mon, Sep 23, 2002 at 02:03:02PM -0700, Alan Kennedy wrote:
> Dear all,
> 
> I know that this is not quite the correct place to post this question,
> but I'm not sure where else to go with it (suggestions? nice ones :-).
> And I know that there are plenty of web developers/masters here, and
> they might be interested.....
> 
> On looking at my server logs for the Accept-Language headers (to
> answer another post in this group), I came across some strange values
> that are definitely not ISO language codes. For example,
> 
> Accept-Language: en-us,x-ns1rDGeT4e2FpA,x-ns2f67971hgDw1
> Accept-Language: x-ns13V8cN8S1Xz9,x-ns2T329gfxKa7d
> 
> I have no idea what these could mean (I've changed the actual values
> BTW, on the remote off-chance that somebody's highly personal
> information was coded in there)

Searching on google turns up two hits in quoted mail message headers,
both with Mozilla 4.7x.
    http://www.google.com/search?q=accept-language+x-ns1

I wonder whether really ancient mozilla cvs might have some clues.  I
groveled around a bit in bonsai but didn't come up with anything.

Jeff