svg/batik/text/smallFonts.svg is failing on Leopard. See the URL for a diff of the failure.
It looks like it started failing around r72141.
The mac/ pixel tests (using SnowLeopard) have to be regenerated, they haven't been updated so far.
A new baseline is needed for the platform/<foo>/svg/batik/text/smallFonts.svg expected.txt/png/checksum files on Leopard (<foo>=mac-leopard) and Snow Leopard (<foo>=mac).
I already pinged Dave about this.
The patch on bug 12448 fixes this problem.
*** This bug has been marked as a duplicate of bug 12448 ***