When I reapplied thermal paste to my heat sink ~18 month ago, I had issues reconnecting the camera cable (see Step 10 MacBook Pro 13" Unibody Mid 2009 Heat Sink Replacement). All of the symptoms you described were exactly those I saw when my camera cable was not properly reconnected. Perhaps you should check here.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.