No seriously, a big thanks to Canon Australia - its good to know they stand behind their products.
Long story short, 40D about 3 months old and 24-105L about 1 month old, and have never been all that happy with exposure or sharpness so took the plunge and took the camera + lens back to Canon, along with a written description of what I thought was 'not right' along with some test images on a CD.
The service sheets came back with (40D) - adjustments performed to Auto focus and Auto exposure. Pixel compensation performed, cleaned and tested all functions. As for the 20-105L - Best focusing performed, cleaned and tested all functions.
All up, 7 (working) days and no charge 
The camera is now a pleasure to use, lens is tack sharp and exposure is (maybe) about +1/6EV which is not such a bad thing 
I know someone will come up with that for around $3,000 (AU) for camera + lens you should expect it to work 'perfectly' straight out of the box but for the minimal fuss in sending it back for service & checking - well worth it




More you learn the more you can forget.

