User manager and gui-glitch

[_igor_]

The user-manager has a little glitch: selecting users to add them to groups doesn't work with safari/mac.
The web-IF overlaps the "System"- and "Diagnostics"-Menu. Zooming a bit with safari works, but not with mozilla.
Looks as if the "old" patch to set the size to 802px got lost. Edited the section without any change of behaviour. Emptying cache didn't work too.

changing the size to 1024px resoved the problem, so diagnostics is now outside the rest of the window, but works.

More grave seems to be this:
Adding a certificate to a new user resulted in a direct logout and no possibility to log in again. resetting password back via console resulted in the following errors:

The webConfigurator admin password and privileges will be reset to the default (which is "pfsense").
Do you want to proceed [y|n]?y

Warning: Cannot use a scalar value as an array in /etc/inc/auth.inc on line 88
Warning: Invalid argument supplied for foreach() in /etc/inc/auth.inc on line 88
Failed to locate the admin user account! Attempting to restore access.
Warning: Cannot use a scalar value as an array in /etc/rc.initial.password on line 50
Warning: Cannot use a scalar value as an array in /etc/rc.initial.password on line 51
Warning: Cannot use a scalar value as an array in /etc/inc/config.inc on line 584
Warning: Cannot use a scalar value as an array in /etc/inc/config.inc on line 585
Warning: Invalid argument supplied for foreach() in /etc/inc/xmlparse.inc on line 197
XML error: no pfsense object found!
*** Welcome to pfSense 2.0-ALPHA-ALPHA-pfSense on  ***
Warning: Invalid argument supplied for foreach() in /etc/inc/util.inc on line 410

edit: I found out, that the config.xml in /conf is empty. recovering one of the backups in /conf/backup results in working condition again.