Bitcoin-0.9 started producing "low-S" values for its wallet signatures, and started enforcing this for relay in 0.10. Our 0.9 release uses quadratic residue as the tie breaker (see issue #5), which means that about half of the transactions being made would not relay on 0.10's default rules, or be mined by a 0.10 miner. We should therefore drop this relay restriction until a "low-S" producing wallet is in wide enough distribution.
Bitcoin-0.9 started producing "low-S" values for its wallet signatures, and started enforcing this for relay in 0.10. Our 0.9 release uses quadratic residue as the tie breaker (see issue #5), which means that about half of the transactions being made would not relay on 0.10's default rules, or be mined by a 0.10 miner. We should therefore drop this relay restriction until a "low-S" producing wallet is in wide enough distribution.