[Bug 1697800] Re: [regression] firefox dies with SIGILL on machines without SSE2

[hackerb9]

Seth writes, "running a known-insecure webbrowser is probably a bad
idea."

Agreed. Except I would say "definitely".

It's important that Ubuntu gets some sort of a fix soon. I've already
seen a person asking on a forum how to downgrade and being told to
install a third party package by hand. This is no better, and possibly
worse from a security perspective.

Seth also writes, "None of the upgrade tools are in a position to check
architecture features before installing a package. There may not be a
happy solution here."

Again, I agree, the solutions I'm coming up with are not particularly
happy. However, a solution is needed. In the short term, switching to
ESR (as mentioned above) would let Firefox work on all supported
architectures and have security updates. For the long term, well, I
don't want to clutter up this bug — which is  about an urgent problem
needing an immediate solution — so I've filed Bug 1698501. I'll continue
my response there.

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Title:
  [regression] firefox dies with SIGILL on machines without SSE2

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