Assinatura de Falha - _PR_MD_SEND
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Crash signatures ( what's this? ): _PR_MD_SEND
If your Firefox crashes with the crash signature _PR_MD_SEND, your computer is likely being affected by malicious software. For steps to take to resolve problems with malware and Firefox, see Is my Firefox problem a result of malware.
For troubleshooting other types of Firefox crashes, see Firefox crashes.

Ajuda do Firefox