I suppose the problem is ghash.io pool problems (maybe DDOS??).
CryptX, are there backup pools used in PETAMINE config?
I know there where more problems at ghash.io today. Both us1 and uk1 servers where down for a time again. My little guys are able to hash at their nl1.ghash.io proxy just fine though. Bit surprised it's not listed as a tertiary pool for petamine though :/