Hi,
I upgraded from 2.2.0 to 2.2.3 with the patch provided.
After upgrading, when i try to login to my site as administrator (the only user that can to access, due to my site is closed for maintenance), i get this error:

Fatal error: getauthconnection(): Failed opening required '/home/www/mysite/html/class/auth/auth_.php' (include_path='.:/usr/local/lib/php') in /home/www/mysite/html/class/auth/authfactory.php on line 33
Warning [PHP]: Unknown modifier '.' in file class/module.textsanitizer.php line 444
Warning [PHP]: getauthconnection(/home/www/mysite/html/class/auth/auth_.php): failed to open stream: No such file or directory in file class/auth/authfactory.php line 33

What about this?
Thank you
danistell

Take another look at the news release about 2.2.3 - the fix is there in the article.

Thanks to you,
now it seems to work...