Hi,
A small (and mostly not visible) update: I copied an improvement from the next version of the site to the current version, to improve handling of cookies and passwords.
If you notice anything not working or an error appearing at some time, please report it here or contact me by e-mail (address = contact at imcdb.org)
the only visible thing should be that you had to log in again.
Also, if you changed your password in the last few hours, the change may have been lost (old password active again).