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OLPC has fixed a problem with the Browse and Epiphany web browsers on the XO-1 laptops.
Problem
Browse and Epiphany may stop suddenly.
This began to be common when using google.com, late in 2014, and early in 2015.
On XO-1.5, XO-1.75 and XO-4, the problem does not occur.
Solution
Upgrade to 14.1.0 once it is released.
Workaround
Use another search engine.
or
Upgrade the webkitgtk3 package:
Diagnosis
XO-1 uses the Geode processor which does not have full SSE support.
WebKit began using SSE instructions for certain floating point operations.
google.com began using JavaScript elements with floating point arithmetic.