I'm getting this as well, with libcairo2, on an up-to-date Debian unstable. Almost every time I close a tab, IceWeasel crashes with this error. I also get it in Eclipse, when taking a code suggestion (when I hit Enter to accept it):
br...@brians-laptop:~$ eclipse The program 'Eclipse' received an X Window System error. This probably reflects a bug in the program. The error was 'RenderBadPicture (invalid Picture parameter)'. (Details: serial 117688 error_code 157 request_code 147 minor_code 7) -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org