Comment 3 for bug 1134409

Some guidance for QA:

" upgrade on ubuntu 12/04 to ff 19.0 reopening one pined tab (gmail) + 1 twitter tab + 3 other tabs, get a freeze."
"I was using a gesture plugin to open multiple tabs from links, and it shut down."

Seems to happen when opening tabs? KaiRo should be able to help with add-on correlations, which I suspect will be to blame if we didn't reproduce in our own pre-release testing.