Same problem here (running Ubuntu 14.04). What I found out is that if your computer has access to a LAN/WAN via another route,



I had the same problem. Took a long time to figure it out but I finally took care of the problem by downloading a video and graphics accelerator driver.
 


This makes even less sense than the original cut off post since a video driver will not have anything to do with NetZERO or any network.

Posting "same problem" won't help as there are thousands of posts you can be referring to.