diff --git a/actions/userauthorization.php b/actions/userauthorization.php
index 29a0c9d6ac..fd4ed5b08f 100644
--- a/actions/userauthorization.php
+++ b/actions/userauthorization.php
@@ -326,13 +326,21 @@ class UserauthorizationAction extends Action {
 	function validate_request(&$req) {
 		# OAuth stuff -- have to copy from OAuth.php since they're
 		# all private methods, and there's no user-authentication method
+		common_debug('checking version', __FILE__);
 		$this->check_version($req);
+		common_debug('getting datastore', __FILE__);		
 		$datastore = omb_oauth_datastore();
+		common_debug('getting consumer', __FILE__);
 		$consumer = $this->get_consumer($datastore, $req);
+		common_debug('getting token', __FILE__);		
 		$token = $this->get_token($datastore, $req, $consumer);
+		common_debug('checking timestamp', __FILE__);
 		$this->check_timestamp($req);
+		common_debug('checking nonce', __FILE__);		
 		$this->check_nonce($datastore, $req, $consumer, $token);
+		common_debug('checking signature', __FILE__);
 		$this->check_signature($req, $consumer, $token);
+		common_debug('checking signature', __FILE__);		
 		$this->validate_omb($req);
 		return true;
 	}
diff --git a/lib/common.php b/lib/common.php
index 19b0e4b643..b2c0a7b464 100644
--- a/lib/common.php
+++ b/lib/common.php
@@ -35,6 +35,7 @@ require_once('DB/DataObject/Cast.php'); # for dates
 $config =
   array('site' =>
 		array('name' => 'Just another Laconica microblog',
+			  'appname' => 'laconica', # for syslog
 			  'server' => 'localhost',
 			  'path' => '/',
 			  'fancy' => false),
diff --git a/lib/util.php b/lib/util.php
index a222f85f65..7171211da3 100644
--- a/lib/util.php
+++ b/lib/util.php
@@ -575,19 +575,22 @@ function _t($str) {
 function common_ensure_syslog() {
 	static $initialized = false;
 	if (!$initialized) {
+		global $config;
 		define_syslog_variables();
-		openlog("laconica", 0, LOG_USER);
+		openlog($config['site']['appname'], 0, LOG_USER);
 		$initialized = true;
 	}
 }
 
-function common_log($priority, $msg) {
+function common_log($priority, $msg, $filename=NULL) {
 	common_ensure_syslog();
-	syslog($priority, $msg);
+	if ($filename) {
+		syslog($priority, basename($filename).' - '.$msg);
+	}
 }
 
-function common_debug($msg) {
-	common_log(LOG_DEBUG, $msg);
+function common_debug($msg, $filename=NULL) {
+	common_log(LOG_DEBUG, $msg, $filename);
 }
 
 function common_valid_http_url($url) {