Setting a default Yahoo! Account for My Yahoo!?

Question

Every day when I logon to my PC and go to Yahoo!, I'm logged on as 'account b'. I logoff and logon with 'account a', the account I want to be my primary yahoo! account. Why does the PC log me back into 'account b' every time and where can I change this so 'account a' will always be my identity for Yahoo!?

I use Trillian to manage all my IM identities (I have three for Yahoo!) and have the Yahoo! Toolbar installed. I use POP to retrieve my email in Outlook.

Answer 1

It's that stupid little check box that says "Leave me logged in for 2 weeks unless I sign off" (or something along those lines) - it's right below where you sign in...