Actually shares.time is indexed already.  The table is over-indexed for such high transaction velocity.  He needs help.  I've offered my services via PM 3 days ago during the previous stats incident, no reply.  I do this for a living and would appreciate a little more professionalism put into the backend.

EDIT: Today's results seem to confirm my theory that the auto-trade algo is affected by database I/O issues.  We came out the stats freeze with very little exchanged BTC.