well pretty much as the title says, i did the 4.2.1 update this morning. i have 2 iphone 4's, one for work, one for personal use. i did both one after the other, no problems. but afterwards, i find that on my personal iphone, all my text messages are gone. completely. i tried looking through the saved backups, but it seems that my backup that i did just before my upgrade got overwritten by the backup after the upgrade. any ideas?