Vista - Login/Passwords and Vista woes...

I am having an issue with some sites (like this one) not keeping my login name and password for more than the session I am here but this does not happen in XP so I have to assume is vista.

I use IE7 and I have my favorite sites saved inside the Links folder so they show on the top of my browser, it saves me the time to go look for them and I just have to click on them once.

Well, out 17 sites I am registered to, only 2 or 3 do this to me but only in Vista. Again, on my XP boot, this does not happen and it is driving me crazy because I don't know what to do.

Things I have tried...

1.- login in and saving the the link once my name is showing on the site with issues.

2.- deleting the cookies for the site with issues and saving a new one.

If I go to a new site that I want to register, it ask me if I want to save my password so I know that is working as well.

Any thoughts? I know is not that big of a deal but it irks me a bit that I don't know why it does it.

Thanks

Apologies folks, no sooner I click on the post button and I found the solution, deleting the cookies again and saving fresh ones did the trick this time around... go figure!

Mods, please delete if you wish.