The issue was in bugle. And it is fixed in revision 0.0.20100718. For reference, here is the message on the bugle mailing list with the proof that it is fixed:
http://sourceforge.net/mailarchive/message.php?msg_name=AANLkTi%3D0-zRWBrzWn9iFtAhpZv3J1b3sSSqgSaAE11e9%40mail.gmail.com -- Ubuntu nVidia package confuses BuGLe https://bugs.launchpad.net/bugs/583932 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs