At http://www.apple.com/science/, I noticed the background images used in the navigation bar are scaled with TOT Webkit. Here is the structure of a reduced test case which I have attached. <style type="text/css" > div { width: 60px; height: 40px; background: url(http://images.apple.com/science/images/nav_links.gif) no-repeat; } </style> </head> <body> <div>   </div> </body> </html>
Created attachment 7873 [details] Reduced test case from apple site
Created attachment 7874 [details] Screen shot of scaled background images
This is filed as <rdar://problem/4522644>
This same issue with background images are occuring at other sites like http://www.apple.com/dotmac/ , http://www.macnn.com/ , and http://www.mozilla.com/.
Setting to P1
Based on my testing, the regression first started with the TOT Webkit NB r13966 (April 19th 5:23:40 GMT)
I think this is the same issue as bug 8508.
*** This bug has been marked as a duplicate of 8495 ***
Verified as dup. This is fixed now on TOT Webkit.