The digests have changed for mesa3d, breaking our builds.  

From www.mesa3d.org:

November 12, 2003

New Mesa 5.0.2 tarballs have been uploaded to SourceForge which fix a
number of automake/libtool problems.

The new MD5 checksums are:

a9dcf3ff9ad1b7d6ce73a0df7cff8b5b  MesaLib-5.0.2.tar.gz
7b4bf9261657c2fca03796d4955e6f50  MesaLib-5.0.2.tar.bz2
79c141bddcbad557647535d02194f346  MesaLib-5.0.2.zip
952d9dc823dd818981d1a648d7b2668a  MesaDemos-5.0.2.tar.gz
b81fafff90995025d2f25ea02b786642  MesaDemos-5.0.2.tar.bz2
a21be975589e8a2d1871b6bb7874fffa  MesaDemos-5.0.2.zip

--jkl