Comment 28 for bug 876195

For a slightly better workaround, I copied /usr/lib/mesa/libGL.so.1.2 from a computer with Ubtuntu 11.04 installed (which has the package libgl1-mesa-glx 7.10.2-0ubuntu2.1 installed). That gives you the accelerated graphics in scilab too.

I put that in scilab's /bin directory because I'm using the binary version from the scilab website - for ubuntu's packaged version, do the trick in the above post with it.