>>929
入ってるみたいだけどよくわからん

$ aptitude search virtualgl | grep -E '^i'
i A virtualgl - Toolkit for displaying OpenGL applications
i A virtualgl-libs - Library files for virtualgl
i A virtualgl-libs:i386 - Library files for virtualgl
i A virtualgl-libs-ia32:i386 - Library files for virtualgl (32-bit)