I have been looking all over the net and can't seem to find any info on this, Google hasn't even acknowledged there is something wrong. Maybe this is only affecting a very small number number of people.
Both Google Now / Search and Newsstand have been crashing on launch with the stock ROM. But on my other JB devices no such problem. I tried rooting this tablet. No change. Then I flashed the unofficial Cyanogenmod 10.1. That solved the problem.
My assumption: the Samsung stock ROM is the source of the problem.
What did I learn?
- My tablet is running smoother without all the Samsung crap. I should have done it even sooner!
- I will probably gravitate in the future to Nexus devices where the OS is not compromised by vendor-motivated overhead. And it's easier to get updates and custom ROMs.
- Because Samsung has not been fully cooperative with the developer community, ROMs often lack certain device drivers. (Another advantage for Nexus.)
If this motivates you to root and flash just be aware of two known deficiencies with the ROM I am using:
-no tethering
-once you turn off wifi you'll have to reboot to turn it on again.
(Thanks, Samsung for withholding wifi device drivers from the public.)