Hey I found some weird things going on. I'm using ubuntu 13.04. Every time I reboot the vm parallels thinks that it is better to move /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0 to /var/lib/parallels-tools/.backup/.libgl/libGL.so.1.2.0 while /usr/lib/x86_64-linux-gnu/libGL.so is a symlink that points to /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2.0 My OpenGL project constantly tells me that it can not find /usr/lib/x86_64-linux-gnu/libGL.so so I have to move the libGL.1.2.0 back to the mesa folder. Is it needed to remove this file? Is this a bug? Regards Simon