estimateGas returns error about balance, when the accounts is empty

[frozeman]

My coinbase address was empty at the time: 0x922a519ac926f69856fcfc1b2b8b846cfb3f6b4e

> web3.eth.estimateGas({from: web3.eth.coinbase, to: '0xdfadbef33b3ddb4631583fe41f69704dccb1f4e0', value: web3.toWei(1000000,'finney')})
web3.js:1791 Uncaught Error: insufficient ETH for gas (922a519a). Req 900000000000000000, has 0`

[frozeman]

in 0.9.20 it seems to be completely broken (returning 0)
in 0.9.20 it appears to be returning an error when i'm faking a transaction from an account without funds

web3.eth.estimateGas({from: web3.eth.coinbase, to: '0xdfadbef33b3ddb4631583fe41f69704dccb1f4e0', value: web3.toWei(1000000,'finney')})
0

Sending:

{"jsonrpc":"2.0","method":"eth_estimateGas","params":[{"from":"0x922a519ac926f69856fcfc1b2b8b846cfb3f6b4e","to":"0xdfadbef33b3ddb4631583fe41f69704dccb1f4e0","value":"0x3635c9adc5dea00000"}],"id":448}