MSN auto log in not wanted

>-----Original Message-----
>Hello all,
>
>This is a strange one. From a fresh boot, if I go to
>www.msn.com and sign in and then sign out all is ok, if I
>click on the "sign in" icon I get the normal password
>request. If I go to www.hotmail.com and sign in then sign
>out, it takes you to the msn home page, if I then click
>on the "sign in" icon it signs my wife in without asking
>for a password. Now here comes the odd bit, if I then
>sign out and click on the "sign in" icon again, it asks
>for a password, it will not at any time after this sign
>in without a password until I reboot my PC. I have
>deleted completely MSN Messenger.
>
>How can I prevent this?
>
>Cheers
>
>Phil
>.
>