for logout issue,
just I got resolved like below in hook_svmods_facebook_connect.php
else if (request_var(‘mode’,”)===’logout’){
$cookies=array_keys($_COOKIE);
$domain=’.’.$config['cookie_domain'];
foreach($cookies as $cookie){
$when=time()-3600;
setcookie($cookie, “”, $when, “/”, $domain);
}
//if (isset($_COOKIE['fbs_'.$config['svmods_facebook_app_id']])){
// setcookie(‘fbs_’.$config['svmods_facebook_app_id'],NULL,time(),’/');
// unset($_COOKIE['fbs_'.$config['svmods_facebook_app_id']]);
//}
}