Firefox can't start at SL6 Pre-Alpha i386 and print error message:

Could not find compatible GRE between version 1.9.2.4 and 1.9.2.4.

Seems like incompatibility between xulrunner-1.9.2.6-1.el6.i686 and
firefox (want 1.9.2.4).

--
Best regards,
Elena