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just ran the new version, now have to move mouse to load web pages and play videos
page freezes until mouse is moved, videos stop until mouse is move, just ran new version of firefox
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Users with a similar issue had been infected with malware. Please run scans with antimalware tools, such as these ones which are free and can work alongside your existing antivirus software:
- MalwareBytes' Anti-Malware
- AdwCleaner (for more info, see this alternate AdwCleaner download page)
- Anti-Rootkit Utility - TDSSKiller
- Microsoft Safety Scanner
- Hitman Pro (trial only)
- ESET Online Scanner
Further information can be found in the Troubleshoot Firefox issues caused by malware article.