After a FF upgrade (from maybe version 17 or 19 to version 22 I think, I'm a little late in complaining about this), the Multifox functionality stopped working. Now, when one tries to open a new identity profile (enabling multiple Yahoo or Gmail accounts to be open at the same time), there's an error message:
Multifox menyelesaikan masalah untuk beralih di antara beberapa e-mel atau akaun media sosial dengan membiarkan anda membuka setiap dalam tab berasingan. Ia mewujudkan profil untuk setiap akaun supaya mereka tidak mengganggu satu sama lain. Multifox doesn't need multiple Profiles in Firefox. 'If you have multiple Gmail, Twitter, Facebook, or Yahoo accounts, you can open them all at the same time. Each Firefox tab, managed by Multifox, accesses an account without interfering each other.'
'Multifox is not available from private windows. Please try again from a regular window.'
I was previously able to 'privately browse' by turning off the history, etc., and this had no bearing on my ability to open a new identity profile window. Are there plans to restore this? I don't ever store history, but I'd like to see multiple e-mail accounts simultaneously. It's really a shame that this got 'fixed'.
Multifox is another Firefox extension for logging in to multiple accounts on the same site which I like because it doesn't messes with your cookies and I was never logged out from both accounts like it sometimes happens with CookiePie.