Try to conserve some memory. Should fix oc-1106 for master.

apps/contacts/ajax/contacts.php

@@ -45,7 +45,7 @@ foreach($contacts_alphabet as $contact) {
 	}
 	$contacts_addressbook[$contact['addressbookid']]['contacts'][] = array('id' => $contact['id'], 'addressbookid' => $contact['addressbookid'], 'displayname' => htmlspecialchars($display));
 }
-
+unset($contacts_alphabet);
 uasort($contacts_addressbook, 'cmp');
 
 $tmpl = new OCP\Template("contacts", "part.contacts");

apps/contacts/index.php

@@ -28,6 +28,7 @@ $details = array();
 if(is_null($id) && count($contacts) > 0) {
 	$id = $contacts[0]['id'];
 }
+unset($contacts);
 if(!is_null($id)) {
 	$vcard = OC_Contacts_App::getContactVCard($id);
 	$details = OC_Contacts_VCard::structureContact($vcard);
@@ -66,7 +67,6 @@ $tmpl->assign('phone_types', $phone_types);
 $tmpl->assign('email_types', $email_types);
 $tmpl->assign('categories', $categories);
 $tmpl->assign('addressbooks', $addressbooks);
-$tmpl->assign('contacts', $contacts, false);
 $tmpl->assign('details', $details );
 $tmpl->assign('id',$id);
 $tmpl->printPage();