I have also been having this problem after upgrading to 2.6.3. I have deleted my cookies (many times), and have tried logging on in different browsers. I have disabled all my plugins and have added lines to my wp-config file for the new cookies as suggested, yet I am still unable to login. Any more thoughts?
I have had this same problem after upgrading to 2.6.3. I have deleted the cookies and my cache, and tried logging on in different browsers. I have disabled all my plugins and have added lines to my wp-config file as suggested here: http://ww.wp.xz.cn/support/topic/189612?replies=1, yet I am still unable to login. If anyone has any suggestions, I would appreciate tit.
