I use Mail with Gmail, and ocassionally Mail will pop open a window asking me for my password. I have no idea why it does this. It seems arbitrary. The even weirder thing is, every time I then enter my password, it just pops the same window open again, as if it didn't accept my password. So I hit the 'Cancel' button to make the window go away, and it takes my Gmail account offline. Then I right click on my gmail mailbox in Mail, and take it back online, and then it works fine - without prompting me for my password. Anyone have this issue? I think it's got more to do with Mail than with Gmail, because I seem to remember it happening before I ever had Gmail.