Ubuntu 12.10 runs terribly slow on desktop

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http://askubuntu.com – So I got to installing Ubuntu 12.10 on a SONY VAIO desktop (a Sony VAIO RS420) but it runs terribly slow. The windows load slow (it won't even pull up Terminal, but connects to WiFi and opens Firefox) but the computer itself seems to run fine (like when downloading files or moving files it works BETTER than Windows 7). I did get an error about needed to update a language pack, but that's it. What can I do to make this thing work correctly? Downgrade Unity or GNOME ? Any help is appreciated. (HowTos)