I've noticed since upgrading to v 2.6 (though I have no idea whether the upgrade is the cause of this) that I'm having big login problems. When I write a post & try to publish it instead of doing so, I'm often taken to the login page. When I try to publish a comment the same behavior occurs. When I reopen my Firefox browser with my blog pages in various tabs, all of them are open to the login page rather than the last blog page that was displayed in the tab.
I'm using Firefox 3.0 as my browser.
This is not how WP behaved previously and it's really troublesome.
Can anyone give me an idea of what could be causing this? Is it a problem of not recognizing cookies or the login file? Something else?