PHP (5.3): PHP auf windows (IIS7) via FastCGI -> http 500 er Fehler

Heute php 5.3 von windows.php.net heruntergeladen (installer) und auf IIS7 eingerichtet

phpinfo(); erzeugt mir http 500 er Fehler -> IIS7 tracing ergibt:

ModuleName FastCgiModule
Data1 FASTCGI_RESPONSE_ERROR
Data2 PHP Warning: phpinfo(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '2.0/DST' instead in C:\inetpub\testsite\index.php on line 3
ErrorCode 5
ErrorCode Access is denied. (0x5)

Lösung: 

In der php.ini

date.timezone = "Europe/Berlin"

(anschließend alle php-cgi.exe beendet)
Anm.: http://ie.php.net/manual/en/timezones.europe.php