Why?

Ok just spent the last hour tring to login to this site. I had just turned off the atuo login with cookies option and tried to submit modifactions it then told me that I wasn't a registered user so I logged in and it had the screen that said I was a user but then it brought me back to the login screen and the whole thing went in a big loop with me being unable to login. So I finally used the only other computer in my house and loged on with out a problem. What the heck happened?

Evil cookie, clear it. Also I find that looging on anywhere by the main forum page has an increased rate of problems.
And i have heard a rumor that the AI of the VBB dislikes posters who used uninformative thread titles, and plays jokes upon them.

If that doesnt work you can reboot your computer and try again. It's not always necessary to do that so try the cookie thing first.