Errors in the console and funny looking client

[Caat]

So I usually start Steam from the terminal with 'primusrun steam'. And it's full of stuffs like this: http://pastebin.com/quvnkRkg. I really don't know why does the it want anything with /home/buildbot, there is no user called buildbot (funny thing is I recenlty used it but only on a remote machine ...)

Also the Steam client looks like this: http://i.imgur.com/nugg3Qg.jpg

I'm on Ubuntu 12.04.

nvidia-settings --version
nvidia-settings: version 304.88 (buildd@komainu) Tue Apr 9 12:17:43 UTC 2013

optirun --version
optirun (Bumblebee) 3.2.1