Foxfire Browser
click on each of these:
http://static.chess.com/js/chess/images/chess/pieces/classic/30/bb.png
http://static.chess.com/js/chess/images/chess/pieces/classic/45/bb.png
http://static.chess.com/js/chess/images/chess/pieces/classic/60/bb.png
http://static.chess.com/js/chess/images/chess/pieces/classic/75/bb.png
then try your echess board again!
I clicked on each one then tried to view one of my games. Still no pieces.
If I hover over my adblocker icon it says "Adblock Plus is disabled" as it should. When I open the 'blockable items' display from adblocker I can see all of the 'piece files' and the piece displayes if I hover over it. That was true yesterday as well.
I had these issuses and use IE with no problems. Then later, I think I downloaded a different version of foxfire and now it works fine. No idea what changed.
Download again may solve the problems, or get the newest version.
I reinstalled foxfire and when that did not help I 'removed' foxfire then installed it again. This did not help either.
My thanks to everyone that has attempted to solve my problem. Chess.com is the greatest!
If you need help, please contact our Help and Support team.

try using this link: http://static.chess.com/js/chess/images/chess/pieces/classic/75/bb.png
can you see it?