Suddenly seeing only Invalid shares submitted on alpha.miningpool.co
Have rebuilt block chain - restarted Stratum - nothing seems to be fixing the problem...
The problem seems to be resolved after about 2 hours..
Problem is back... Seeing this in logs:
receive version message: version 60001, blocks=369748, us=166.78.3.63:47272, them=107.2.64.245:9333, peer=107.2.64.245:9333
this seem the litecoin chain, many alt coin QT client sees this, usually exit and restart QT will fix the issue. I remember there was some thread on NBL discussed this issue.
Don't think you need to rebuild the block chain, as this one will not be accepted, due to checkpoints.