i feel you. i just had the all my synced data lost from my hard drive due to a power outage...i'm pretty sure it was because i got mad and pressed the power button on my laptop! on my reboot i had to sign back in to sync and all i got back was all my favorites, theme, and settings. basically i lost all my extensions for some reason...if anyone knows or has an idea as to why it was just the ext and nothing else i would love to hear the explanation!!! lol..