After extensive check I cannot explain a loss of ~50,000 bitcoal. Was blockchain modified? My Wallet file was corrupted. I checked from various backups, and then resynced from keys from 0. I am mining again and no problems for a week now.
Latest update of forknoted and simplewallet. as above
Ubuntu Server 14.04
Wallet is not on miner machine.
THX
Don
There was a fork quite a while ago, because the new version implemented some additional transaction checks.
Please all update to the newest Forknote version if you still haven't. It fixes a potential double spending issue:
https://github.com/forknote/forknote/releases/tag/2.0.1.1