Sick in bed.
Bluetooth off. Wifi äll day. Auto screen brightness. Lastest firmware
My screen-on time on a weekend, adaptive brightness at 50%, gps, all syncs on. Mainly wireless browsing.
Is it me, or the email app isn't working? I can wiew that i got mails but i can't read them :( It crashes the app
Try disabling 'Pac in Black' as kaizah said. I also had this problem with nightly 28th Nov....
Try App List Backup