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Firefox hangs occasionally

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Firefox hangs occasionally. Like once every 6~10 minutes. And each hang lasts about 2~5 minutes. When it hangs, it sucks all CPU resource(50%), but the memory cost doesn't quiet change during the hanging. It never crashes. All I have to do is waiting. But it comes a lot and it's killing me.

I hope for some help here, please.

Firefox hangs occasionally. Like once every 6~10 minutes. And each hang lasts about 2~5 minutes. When it hangs, it sucks all CPU resource(50%), but the memory cost doesn't quiet change during the hanging. It never crashes. All I have to do is waiting. But it comes a lot and it's killing me. I hope for some help here, please.

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There could be several reasons for the hang. This article provides possible reasons: Firefox hangs or is not responding - How to fix.