If you haven't been treated to the update screen recently, now would be a good time to get better acquainted.
The Mozilla foundation has released another version of Firefox, release 18.104.22.168, to fix a flaw
The finger for these latest problems is being pointed at poorly implemented fixes for a prior issue
Although the team can't find any evidence that the flaw can result in remote code execution, it has been patched as a high-priority issue due to previous garbage collector issues having known exploits in the wild – exploits which could feasibly be adapted to take advantage of this latest bug.
Although running script blockers like NoScript
mitigates the effect of the bug, it's still a pretty good idea to upgrade
to version 22.214.171.124 if you haven't done so already.
Any Firefox users suffered instabilities since installing 126.96.36.199 that could be attributed to this bug, or has it all been plain sailing? Share your thoughts over in the forums.