As I've written, orphaned blocks are related to the fact, that there is another big pool with more hashpower which finds a block earlier mostly. So my guess is, when I gain more hash power, the orphaned blocks should decrease. But that is a fact that belongs to blockchain itself, really.
More hashpower = more orphaned blocks.
Here is limit for block luck, that makes block go orphaned.
Seems that some bug in blockchain, like with sumocoin.
Also - fix links to blockchain explorer.