Hi, I am using Cairomm in an implementation of the Mona Lisa GA/hill-climbing challenge discussed by Roger Alsing (<a href="http://rogeralsing.com/2008/12/07/genetic-programming-evolution-of-mona-lisa/">http://rogeralsing.com/2008/12/07/genetic-programming-evolution-of-mona-lisa/</a>). Cairomm has been working very well, but I don't think it is using any hardware acceleration. I checked this by looking at my GPU clock (I have adaptive clocking enabled). It does not change when I run the Mona Lisa program (it stays at the lowest setting). It does change when I switch between windows and such, though. I believe that Gentoo automatically includes the XRender extension into its X server ebuild, so I'm pretty sure I have that. Do you have any idea how to get Cairomm to use hardware acceleration? Or, failing that, how to tell if any Cairo applications do, and if Cairo and XRender are integrating properly? My system: Gentoo Linux, Xfce Window Manager, Nvidia GeForce 9600 Thank you very much, Noah