Attacked by non-existent rows on shard 2

[bcanon]

One of my first rows keeps getting drained (millions in money and
fuel) by a non-existent row.

05:16:25
run by timlash:
UPDATE rows SET attackers=attackers-3498762+111304, money=money
+19818613, fuel=fuel+31330802-19667119 WHERE row_id=457;
UPDATE rows SET attackers=attackers-1500000,
defenders=defenders-625000, money=money-19818613, fuel=fuel-31330802
WHERE row_id=307;

There's no row 457 on shard 2.

Can anyone shed some light on how this is happening?

bcanon

[timlash]

See:

http://groups.google.com/group/mysqlgame/browse_thread/thread/2d265f7a5bd68fbc#