I'm having this problem too. I've tried safe mode, reinstalling, but is still crashing several times an hour. The crashes seem to be most often associated with opening/navigating tabs. I've even tried running the HP dagnostic utilities (memory check, etc, but nothing was flagged up and everything else on the machine seems normal). Firefox was running fine on the laptop pretty much until today. Nothing in about:crashes, but here is an example from the Windows crash report: Description Faulting Application Path: C:\Program Files (x86)\Mozilla Firefox\firefox.exe Problem signature Problem Event Name: APPCRASH Application Name: firefox.exe Application Version: 1.9.2.3989 Application Timestamp: 4cf9293f Fault Module Name: StackHash_3031 Fault Module Version: 6.1.7600.16559 Fault Module Timestamp: 4ba9b29c Exception Code: c0000374 Exception Offset: 000cdc9b OS Version: 6.1.7600.2.0.0.768.3 Locale ID: 2057 Additional Information 1: 3031 Additional Information 2: 30312c660a2e07ccf310c5276134d2eb Additional Information 3: a78d Additional Information 4: a78db8f72749bda8777f53e62fd47c27 Extra information about the problem Bucket ID: 2238070679