Seems that there is a little trip-up regarding the last update.
Security for handling passwords has been changed to double md5 encryption. As such, registered users may receive a invalid user name or password message when attempting to log in.
If you are a registered user and receive the above message, click the "forgot password" link and have your password and emailed to the address you used - a new valid password will be recieved with which you can log in normaly.
If you still have problems, click this linkor the link found on the main navigation panel on the left and let me know.