TomandBunny
post 7 might help
http://www.zen-cart.com/forum/showthread.php?t=65871
Rather than deleting the cookies (as suggested in the thread above) I use a number of different browsers, eg firefox for all admin stuff, opera for logging in as customer one, chrome as customer 2 and so forth- you can set the extra browsers to auto delete cookies.
Let us know if you are successfull and apologies for the feck up re password encryption




