I just installed 12.10 and it was using my wireless connection just fine. After the restart after installation, the Network manager said I was on a wired connection and didn't have my wireless connection listed.
I have a Dell Inspiron 1440 if that helps. It's about two and a half years old. Any help would be greatly appreciated!
Update: I reinstalled and after it did application updates and restarted to apply them, my wireless completely disappears to the point it says I only have wired.