[wulf]

I don't know the camera but I do know that blurriness can be caused by two things:

1. You accidently focused on something else - that may be visible in the shot but can be difficult to spot.

2. You moved the camera while the shot was being taken.

Blur #1 is to do with distance from a focal point and gets more pronounced with things that are too far or near. Blur #2 will affect everything in the frame and is often directional (eg. you moved the camera down a fraction) rather than evenly distributed. I suppose you could break out another category, when the camera is solid and focus is in the right place but the subject moves.

Have you got any samples you can post? It might be possible to make a better judgement seeing some of the "damage".

Wulf