I have read lots of posts relating to this issue.   The standard response seems to be set cleartypeNoBg to false or true, but that still does not work for me.

 

Please does someone have a definative answer to this issue?

 

I am using PNG's with transparent background, which display a white background when the page is refreshed, however, it only happens if the refresh coincides with a transition.   When the page is refreshed outside of a tranistion then the white background does not flash up?

 

Thank to everyone for their help.