When a bug is submitted to Apple via http://bugreporter.apple.com/ it’s allocated a RADAR number. By poking around for some dates and RADAR numbers it’s possible to get a rough idea of how many RADAR issues are being added per day. Of course this assumes that they’re allocated in contiguous numerical order. But we can see that even if they’re getting a conservative 1600/day that’s a lot to sort through, allocate as duplicates, request more information, and assign to the appropriate engineering effort. I’m not sure if this includes crash reports that are filed automatically from Mac OS X either.
Apple engineers repeatedly say that the company is bug driven, so it’s good to see they’re getting so many reports logged 🙂