Do you really need a cold wallet? How often are Bitcoins stolen? The official website says the Satoshi client offers a high level of security.
How does one move from a hot to cold wallet?
Does the cold storage client need to be encrypted or backed up?
Is there a difference between a private key and the .dat file?
If you want to spend or transfer your cold wallet, do you have to go online and dl the entire blockchain?
Thanks.