MIIOG is one of the quotas which protects a (bad) client from sending a request which will cause a large resource (memory, mostly) allocation in the service. It's more of a security issue than a performance one. You can find more details at
http://msdn.microsoft.com/en-us/library/ms733135.aspx.
Proposed as answer byTanvir HudaTuesday, February 1, 2011 1:15 AM
Marked as answer byYi-Lun LuoFriday, February 4, 2011 9:13 AM