Also since you mentioned you can no longer reproduce this and it doesn't seem firefox-specific, I'll close this but please feel free to reopen or report a new bug (perhaps against the kernel) if you run into the issue again.
Also since you mentioned you can no longer reproduce this and it doesn't seem firefox-specific, I'll close this but please feel free to reopen or report a new bug (perhaps against the kernel) if you run into the issue again.