Is this something on the gravatar side? I've duplicated the css exactly and been unable to reproduce it. I also went through the functions.php file to make sure there wasn't a function in there rounding them and didn't see anything.
Is there some build in function with version 3.5 beta 1 for rounding img corners that isn't in version 3.4.2? cause using twentytwelve in 3.4.2 doesn't have the rounded corners, if there is a built in function does anyone know where it is located so I can make it work in 3.4.2?
Any help would be appreciated, thanks.