• Did this occur after an update of Firefox, a plugin or a fresh install of a plugin? - Try disabling the plugin(s) and updating/reinstalling Firefox.
• How much RAM is installed in your system, and how much is available to Firefox? - try allocating or adding more
• How many tabs do you have open? - Firefox may run out of resources if there are too many

Hope this helps :)

• I think it started after installing a theme, but I have since uninstalled it (and other addons that I don't use)

• 3GB, just gave it higher priority

• I've had a bunch open for a project (24 tabs split between 8 groups right now) but when firefox restarts and opens all the tabs again, it hasn't been an issue.

Wyoung221: I've looked over your crash reports and two things are consistent. 1) Your crash report signatures are consistent with one signature (gfxContext::PushClipsToDT(mozilla::gfx::DrawTarget) which refers to graphics. (₁) There's one signature (mozilla::WebGLTexture::DoDeferredImageInitialization(unsigned int, int) that has a new bug filed on it but it's stalled. 2) Your System Memory Use Percentage hovers around 70-80% so this could be out of memory crashes as well. (₂)

1. Firefox has hardware acceleration set to "on" by default, but it's still young, which means some video cards or drivers might have problems with it. You can try to disable hardware acceleration in Firefox (you need to close and restart Firefox).

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

2. In addition to the hardware acceleration, the System Memory Use Percentage in the crash reports is rather high, so this might be out-of-memory crashes

• https://support.mozilla.org/kb/firefox-uses-too-much-memory-ram