I just got my iMac back the yesterday(it was being shipped over seas to me). I had previously used Google Talk in Adium, but since I had changed the password since the last time I used it, it of course failed on the first attempt at connecting. So I changed the password to my new one, and still not working. Since I had switched to iChat on my MacBook(where it does work) I tried iChat, but nothing. I then tried Psi, and still nothing. It works fine on my MacBook, and even in Parallels on the iMac. Any ideas why it wouldn't work at all on the iMac? The software firewall isn't on either, and the iMac and MacBook connect to the same wireless network.