Get ready to mock.
Installed bitcoin-qt about a year ago, would fail upon launch (don't even remember why.) Literally gave up WITHOUT troubleshooting... and totally forgot about mining.
Thought about mining again about 3 months later, decided wasn't worth it from an electricity cost perspective ($0.30/kwh here...)...
Surprise surprise, it now is....
Pity about the complete lack of supply chain for FPGA/ASIC setups thought :-|