[Bug 964584] Re: Firefox hangs temporarily everytimes it receives the focus

[Chris Coulson]

Nothing has changed in Firefox for a while now, so I guess this is
triggered by HUD changes last week. Could you attach gdb to Firefox and
get a backtrace whilst it is hung?

Note that we deliberately don't export dbusmenu objects for a menu until
it appears on screen for the first time, to avoid this type of issue
with large menus (which also affects Chrome too - see bug 801699, which
is pretty much the same issue), as we used to get reports of Firefox
hanging for 10-15 seconds when opening the bookmarks menu for the first
time

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Title:
  Firefox hangs temporarily everytimes it receives the focus

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