Forums problem: keep getting logged off

[Malrubius]

Until a day or two ago, every time I've come to this web site (since December!), I've been automatically logged in (I (still) have the "remember my password" checkbox checked ).

But now, if I visit another site and come back, I am logged off and have to log back in. Sometimes it seems to happen even if I don't leave the site at all, but just go from the forums back to the home page.

It could be something that changed here on my machine, but I can't think of what. Then again, it could be a server-side change.

Has anybody else had this start happening recently? Any ideas about what would cause it?

[Rogean]

make sure you have www. at the front of the url.

If you still have problems, clear your cookies, and log in again.

[Malrubius]

Deleting my old cookies fixed it. Thanks!

[Qaedain]

I'm also having an issue with the forum, and it started happening after the most recent patch (if there's any correlation). When I mark all posts as read via the "quick links" dropdown, I receive this message:

Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.

I have deleted my cookies, tried three browsers, confirmed my security settings, blah blah blah.

[Gorgetrapper]

I've deleted my cookies, and everytime I log in on the main page, I stay logged out when I return. The actual forums, however, keep me logged in.