I now understand what happened. Iceweasel now looks for .mozilla/iceweasel where it was looking for .mozilla/firefox. I had many dirt in .mozilla. So i have replaced the newly empty created .mozilla/iceweasel by my old .mozilla/firefox.
My full profile is back. This is a non trivial migration for common user that upgrades. -- Benoît Dejean GNOME http://www.gnomefr.org/ LibGTop http://directory.fsf.org/libgtop.html
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