I use Safari on my Mac and the cookies this forum uses apparently don't work with it. It never keeps me logged in. Other sites work just fine.
I think you might have a corrupt cookie there Zparticle.
deleted the cookies and it still doesn't work. There is something wrong with the forum software interacting with safari. Like I said all my other sites work. Oh well.
I'll post a topic on the smf help forum to see if there's anything they can suggest to help out.