Not possible to upgrate iceweasel 9 to 10 on debian squeeze

[Jose]

Dear Sir or Madam.

I can't upgrade Iceweasel 9 to newest version (10), because xulrunner-10
depends on libvpx0 (>=0.9.7) which is not yet available, the latest version
on squeeze is 0.9.1-2. Can you upload a newest library to squeeze-backports
or would it conflict with Chromium-browser?

Hope it's feasible to fix this. If not, I'll remain using iceweasel 9.

Regards.
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