I've read Apple's info about troubleshooting Facetime, and googled for more info from forums etc. I still can't get this to work: 1) I originally had FT set up on my iMac, with my Apple ID, password, and the gmail address I had chosen as the identifying address. Worked fine. 2) I got a MacBook Air while abroad, opened up FT and logged on with the same (my only) Apple ID and my gmail address. Worked fine. 3) I get home and discover what you all already know, that while you can use the same Apple ID on all devices, you have to have a different identifying email address for each device. No problem, I think, and create firstname.lastname@example.org for my iMac (after reading that gmail has that function). I test out the new gmail address by mailing myself, and it works fine. In FT, Apple lets me go through the verifying process with no problem; I get the verification email, the link works, and when I log into the Apple ID site I see that the mail has indeed been confirmed. 4) I then think I'm ready to log on to FT via my iMac, but no. I log in with my Apple ID and password. FT asks me which mail I want to be identified by, and I type in the new gmail address. After a few seconds, "Verifying" changes to "Verified", but nothing happens. After a couple minutes FT tells me that the mail address couldn't be verified and asks me to check my network connection. I don't want more than one Apple ID, I want to use separate identifying mail addresses for each device (I have an iPod as well that I will want to have in this loop). Apple tells me I can do that, but in practice it doesn't work. I'm running 10.7.3 on my iMac. I looked for an existing thread on this here, but couldn't fine one. Any help is REALLY appreciated.