Comment 21 for bug 236853

Just for report: I created fake update file on my local server and I emulate the auto update being in progress in background. When I shutdown Minefield it does NOT crash - tried 10 times...

The theory with update service will probably be wrong because: nsUpdateService.js!_verifyDownload that creates cryptohash instance is called only from OnStopRequest with status NS_OK. When shutdown with download in progress, the download request is canceled from "xpcom-shutdown" notification with NS_ERROR_ABORT status - so _verifyDownload is not called. Anyway, NSS is shutdown by nsNSSComponent in "profile-before-change" event that comes earlier then "xpcom-shutdown". If the download would succeed between these two events and OnStopRequest would be passed to JS somehow we theoretically may crash. But it is highly unlikely to happen.