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help me stop Firefox using 99% CPU and blocking the PC, especially ebay

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the PC stops working when using ebay. Task manager shows firefox using 99% CPU. Close firefox and the PC runs again.

ebay is worst for this.

The PC is running XP sp3

the PC stops working when using ebay. Task manager shows firefox using 99% CPU. Close firefox and the PC runs again. ebay is worst for this. The PC is running XP sp3

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How about updating to something newer that Firefox 32?