So there isn't any CUDA 5.5 compatible updates ?

You actually need 6.0. Why the hell do you have a compute 5.0 card and a driver that doesn't even support compute 5.0 specific shit?
Cause I'm using Linux KopiemTu 1.4.
Waiting for the next 2.0 Release including latest Nvidia updates.
May-be you should discuss with KopiemTu dev so he upgrade his project, I think we made it clear a few months back, that we won't support anymore 5.5. (mostly because it takes forever to compile).
Now if you want to compile with 5.5 you need to remove compute_50/sm_50 it should work (may-be not on the optimization level though...)