Iceweasel 3.5.16 error

[Mitch Labuda]

I login to my account on via.me and the web site is nearly blank except
for some graphics.

Error console in Iceweasel shows errors;

Warning: Unknown property 'box-shadow'.  Declaration dropped.
Source File:
http://www.google.com/search?q=iceweasel&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:unofficial&client=iceweasel-a
Line: 8 

Many more almost the same.

New, clean install iceweasel and debian stable.