When i log in here on the forum, and i use a wrong password, ill get the folowing error:

Notice: Undefined property: stdClass::$cache in DrupalDatabaseCache->prepareItem() (line 399 of /usr/html/evnix.co.cc/drupal2/includes/cache.inc).

Are you getting this error always when you enter the wrong password or
was it a one time error .

not a one-time error.
Im am getting others to, when requesting new pass.

Error message

Notice: Undefined index: required in entity_metadata_field_default_property_callback() (line 64 of /usr/html/evnix.com/drupal2/sites/all/modules/entity/modules/field.info.inc).
Notice: Undefined index: required in entity_metadata_field_default_property_callback() (line 64 of /usr/html/evnix.com/drupal2/sites/all/modules/entity/modules/field.info.inc).
Notice: Undefined index: required in entity_metadata_field_default_property_callback() (line 64 of /usr/html/evnix.com/drupal2/sites/all/modules/entity/modules/field.info.inc).

We will try and fix those bugs as soon as possible.
Thanks for reporting.