Allowed to 13.0a1 nightly update. It is hung. Now the > 50% CPU usage

This morning helped the nightly update manifest. However, he hung Mid-implementation to date. Noticed CPU has increased substantially to about 85%. Tried disabling add-ons, safemode, reboot... Processor clocked constantly higher than 50% now even without launching nightly. Stakes never 100%, but extends between 50% and 92%. I'm puzzled! Ran Malwarebytes and ESET NOD (last)... nothing detected. I completely shut down and rebooted 5 x now. Same question.

Searched with keywords "CPU usage" excessive and inactive. Found the following link

http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-performance/presentationfontcacheexe-uses-50-of-my-CPU/4200fe85-458F-4f19-b791-1fe5395304da

Followed the instructions and it worked like a charm. CPU now idling between 4% and 12%. Candy!

Tags: Firefox

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