I seem to be having similar problems to other posters on this forum. I upgraded to 2.6 and no longer have admin access to my blog at all. I used mySQLadmin, followed the directions, used a md5 hash encryption tool; changed my password; went to login WP and IT STILL WON'T ACCEPT MY NEW PASSWORD. I returned to mySQLadmin and see that the md5 hash also changed to something else. Any advice? Right now, I'm going to try to revert to 2.5.1. I've tried everything else. Any ideas? Thanks.