But this time, since I'm doing an OS upgrade, I figured I'd better let the backup run. Several hours after kicking it off, the backup progress meter has hardly moved. I'm leaving on a trip tomorrow, so I don't have time for Apple crapware shenanigans, so I start doing some reading.
It turns out that there's an obscure setting that gets defaulted to 'true' that has your device send it's usage data and crash reports to Apple every time it sync's. You have to queue up to upload that data alongside everyone else on the planet that's currently synching. When I found my crashdump folder it had over 60 dumps in it. Goddammit Apple! Get your garbage off my computer!
This forum posting has instructions for how to reset that setting. It's not easy, you won't find it by poking around.
The Idiots Guide to Making your Iphone Backup fast
In case that forum thread ever vanishes, here it is in a nutshell.
1. Start a sync, but cancel it, so you have your device listed in iTunes, but not currently locked up.
2. Right-click and select "Reset Warnings" from the context menu.
3. Next time you sync, you should see a dialog box like the following.
4. Click "No Thanks". That'll get you out of the queue for crashdump reporting on every sync.
I'll drop an update later as to how the upgrade goes and the backup situation. Don't get me started on the fun of moving an iTunes Library from computer to NAS drive . . . which is what I spent the first half of the weekend doing.