I have Ubuntu 12.10 installed with windows 7 on a partitioned hard drive in a new gateway tower. My wireless card is made by realtek. The install went fine, I was able to connect to wireless to install updates and whatnot. However, at some point both wired and wireless internet began working poorly/not at all in Ubuntu. The aggravating part is: Ubuntu claims both are working just fine and both work great in windows. At the moment I am online with an ethernet cable which the network manager says is running at 1000mbs and also have available a wireless network at 130mbs. However the connection continually goes in and out (which is not registered in the network center, i just cant open webpages, install packages or even ping external websites). At this very moment I can chat in gchat, but cannot load new pages in ask ubuntu forums or download updates. I have spent several hours in forums trying to fix this, but am otherwise a novice with linux. I tried installing a new driver for the wireless card, but am not sure it worked, as in the install report one error message: Module 8192cu does not exist in /proc/modules. No drivers appear in software sources. Any help would be tremendously appreciated.