Blender slower in Ubuntu 12.10 than in Win7

Hello,

I setup a fresh Ubuntu on my Laptop and have the latest geforce drivers.
I use bumblebee.
Is it normal, that Blender is slower on Linux than Win7?

GPU Rendering seems also not to be faster than CPU.

How can I check, wheter my Ubuntu is ready for Blender or not.

Notebook: Acer Aspire V3-771G
Prozessor: Intel Core i7 3610QM
Grafikkarte: NVIDIA GeForce GT 650M 2048 MB
RAM: 16 GB

OS: Ubuntu 12.10 QQ


SOLVED
I’m sorry, my mistake.
Instead ofoptirun blender
i runoptirun /home/use/.blender/blender-softwaregl