If, like me, you own an NVIDIA graphics card, you might be somewhat interested to learn that they released new OpenGL drivers today.
While Second Life is not, to my knowledge anyways, using OpenGL 3.0, there have also been enhancements to some OpenGL 2.1 extensions, so it’s possible you’ll still see some improvement with this release. Even if you do not, there will certainly be other applications in the not-distant future that will make use of the new features and extensions.