Solo-mined for 3 hours with 3 graphics cards, got less than I would have gotten at the pool, even though the diff is much lower.

Huge spread in blocks, fastest was 5 minutes, slowest almost 2 hours.
After 3 hours I got 2 orphan blocks, used cgminer 3.1x on Win7 64 and latest wallet.
Just hate solomining...

Time to mine something else, that works...