Oh, Firefox, why can't you remember who I am?

Am I the only person who has found that Firefox 3 won't keep you logged into various sites between sessions, whereas Firefox 2 would? Between this and the fact that some of my favourite add-ons won't work with the newer version, I'm considering switching back to the older version of everyone's favourite open source browser. I'd rather not, as some of the changes in Firefox 3 are real improvements, that I have found quite useful.

Perhaps the problem will be fixed in 3.1, which I hear is coming out in a month or two. I hope it will be.