Oh, derp, I should have looked harder. I didn't realize this patch was
changing the Gecko/X _and_ rv:X stings.

OTOH, I'd suspect this ends up breaking our Firefox landing/first run
pages, which check to see if you're actually running the latest build or
not.

Did you test to see if that's a problem? And/or give webdev a heads up?
I'd expect that Mozilla's own sites/metrics are the _only_ place on the
web where this should be a valid concern.

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https://bugs.launchpad.net/bugs/934887

Title:
  Firefox user-agent string is too unique

Status in The Mozilla Firefox Browser:
  Fix Released
Status in “firefox” package in Ubuntu:
  Triaged

Bug description:
  As shown on http://panopticlick.eff.org

  The useragent string "Mozilla/5.0 (X11; Ubuntu; Linux x86_64;
  rv:10.0.2) Gecko/20100101 Firefox/10.0.2" is too unique and in
  combination with a fairly unique plugin list this allows browser
  fingerprint tracking, which is bad for privacy.

  I would suggest this change:
  Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:10.0.2) Gecko/20100101 
Firefox/10.0.2
  Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:10.0) Gecko/20100101 Firefox/10.0

  This removes makes the version number less unique. Also the Gecko
  version could be made a bit more generic.

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