I was having frequent reboot issues earlier this week, but I was also getting SD card errors. But when I took the SD Card out, the rebooting issues went away. Don't know what day the update was installed relative to this, but it was pretty close. But now I've just noticed that I no longer have a voicemail icon on the top - just history, favorites and the keypad. Unless the voicemail is on an app on the old SC card? (wouldn't think so!)