Ok, two updates to Diablo later and we still have the same problems with the E-mail app. I leave my unit on, and modest randomly, silently crashes. I get no new mail notifications, and trying to open the client receives no response until I reboot the unit. I've missed important e-mails this way. Worked without problem pre-Diablo.

On top of this, Often if I double click on an e-mail to open and read it, sometimes it just disappears

hmm, i have yet to have a email disappear on me after the last update, but it could just be that i have been lucky so far...

In all honesty, I haven't experienced that problem since the update, but I don't know if it's because I have learned to open the message below first, and then go back to the newest one in order to prevent that. But the crashing app is the most annoying