I just upgraded from 13 to 14 on my Dell XPS m1530 laptop and I cannot connect to the internet (I'm posting this on my desktop running windoze). This problem even extends to an ethernet connection. The computer recognizes my wireless network and that it is plugged in directly to the router, but it won't connect. I am not the best with linux, so if you require more information, please ask and instruct me how to find it. Thank you in advance.
UPDATE: Now it seems that a wired ethernet connection does work. However, although the wireless networks are visible, I still can't connect to them.