I used IE to log into Stack Overflow (via OpenID). Then, I installed Firefox. It must have copied the cookies from IE (I didn't pay close attention to the install screens), because when I came to Stack Overflow on Firefox, I was already logged in.

More disturbing, though, was the fact that from Firefox I couldn't log out. I was able to create an account on meta and log in and out from here with no problem, but could not log out of Stack Overflow without cookie intervention.

This bug isn't a big deal...just a paper cut.

Recap - to reproduce (on a Windows machine):

  1. Clear cookies from and uninstall Firefox if installed
  2. Log into StackOverflow.com in IE
  3. Install Firefox, allowing everything to be copied from IE

In Firefox, you should find yourself already logged into StackOverflow.com, and unable to log out (you can click the logout link and then the logout button, but to no avail).

I have followed these steps and successfully reproduced the bug on Windows Vista with IE8. The solution is, of course, to clear StackOverflow.com cookies.

  • 2
    Did you click the logout button after the logout link? – random Nov 25 '09 at 8:36
  • Have you cleared your frigging cache? – Ladybug Killer Nov 25 '09 at 8:45
  • Yes and yes. Neither were of any help until I deleted my cookies, at which point neither were necessary. – Dan Nov 27 '09 at 6:50
  • I updated the description with steps to reproduce the buggy behaviour. Will an admin please remove the status-norepro tag? – Dan Nov 28 '09 at 6:49

Dan, I just don't know how useful this "bug" is to anyone.

If anything it should be filed against Firefox w/r/t their IE import, because we are deleting the cookie when you log out.

| improve this answer | |
  • Does the cookie store browser-specific data? In any event, you're right: the "bug" is very unusual and will affect virtually no one. – Dan Dec 3 '09 at 1:06

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