I've had so many warnings. Mt.gox/cryptsy/bitcoinica and other exchanges getting hacked. This time i got to be a victim myself (not a big loss since most of my funds are in cold storage), but for now i've also put alot of alts in cold storage aswell. Guess i had to learn it the hard way.

For those who do, keep in mind that usb-sticks and hard-drives could get failures so make sure to make multiple backups.