Of all the things

I do rather like the new templates but what has been driving me to distraction is that my background image gets automatically resized, incorrectly, in Google Chrome. It doesn't happen in IE8 and notably does not happen to the images provided with the templates.

I've had no response from the help forums but have now cracked it - for which purpose I am uploading the picture I want to use here :

Why? Well it turns out that I can take the web link for the above, remove the scaling (the /sxxx) and use that with no problems found yet, whilst the same technique using Picasa fails - therefore, the problem is Picasa interacting with Chrome.

Bizarre.

Incidentally, this picture is a macro shot, taken hand held on a point & press camera in the back garden.