Can’t use 2 separate mail clients with Gmail account

I set up mail.app to get my gmail at home, and it worked great. Then used the same settings at work – no luck! I kept getting “connection timed out on port 110”.

Thanks to this discussion, I found out that you cannot download Gmail to more than one email client. There is a workaround using 2 Gmail accounts, but I am too lazy to do it – but it’s good to know about.