[gelöst] Fehler in Drupal 6.25 nach Aktivieren von PHP 5.3

Hallo Liste,

für andere Aplikationen brauchte ich PHP 5.3 seit dem bekomme ich in Drupal 6.25 immer folgende Fehler:

warning: date() [
function.date]:
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/Berlin'
for 'CEST/2.0/DST' instead in /var/www/web815/html/drupal-alt/sites/all/modules/ubercart/uc_roles/uc_roles.module on line 996.
warning: date() [
function.date]:
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/Berlin'
for 'CEST/2.0/DST' instead in /var/www/web815/html/drupal-alt/sites/all/modules/ubercart/uc_roles/uc_roles.module on line 997.
warning: date() [
function.date]:
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/Berlin'
for 'CEST/2.0/DST' instead in /var/www/web815/html/drupal-alt/sites/all/modules/ubercart/uc_roles/uc_roles.module on line 998.

warning: strtotime() [
function.strtotime]:
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/Berlin'
for 'CEST/2.0/DST' instead in /var/www/web815/html/drupal-alt/sites/all/modules/ubercart/uc_store/uc_store.module on line 1047.

Was kann ich hier machen?

Vielen Dank!