Multiprocess Firefox hangs! (on Windows)
Security set to High, but during reading Wikipedia it (7.0.2) hangs anyways!
One of the threads of the main process (with start address
ntdll.dllRtlAcquireSRWLockExclusive+0x31 (No unwind info)
and falls into
P.S. Manually resuming the thread brings it back to live.