Ubuntu 12.10 wireless reports it is working, but actually doesnt

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http://askubuntu.com – 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 c (HowTos)