I have a couple of gmail accounts and I switch between them often, each time I want to switch to another account I need to sign out the current and sign in the one that I need to check, I used to do this with firefox without problems but now that I switched to opera I got some issues at time to sign in / sign out on gmail, apparently its an issue related with the cookies management, this is the error message that I get when I try to switch between accounts

http://i66.tinypic.com/30u7otl.jpg

And this are the cookies settings in Opera

http://i63.tinypic.com/2hhk6qp.jpg

I'm using the latest Opera on Win 7 64bit