I think RC was the one that told me that ORG gets better results with the 462 client under Linux.
I'm using the 463 client for Klinux.
You might need to let it run all night, and check it again in the morning.
The client needs to get warmed up to start putting out max blocks.
Everytime I restart the client, it'll start out slow, and gradualy increase it's speed after doing some blocks.