The math fonts have been brought back. They can be found at http://support.wolfram.com/technotes/latestfonts.en.html
The Ubuntu bug for this is at https://bugs.launchpad.net/ubuntu/+source/ttf-mathematica4.1/+bug/299427 -Joseph (i.e. GiuseppeVerde) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]