diff --git a/Makefile b/Makefile
index e74d2f9..eb7cd62 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION = 2.16
+VERSION = 2.17
 PACKAGE = yubikey-val
 CODE = COPYING Makefile NEWS ykval-checksum-clients.php			\
 	ykval-common.php ykval-config.php ykval-db.php ykval-db.sql	\
@@ -89,7 +89,7 @@ release: dist
 		echo "  make release USER=simon@josefsson.org KEYID=2117364A"; \
 		exit 1; \
 	fi
-	@head -3 NEWS | grep -q "Version $(VERSION) .released `date -I`" || \
+	@head -1 NEWS | grep -q "Version $(VERSION) released `date -I`" || \
 		(echo 'error: You need to update date/version in NEWS'; exit 1)
 	gpg --detach-sign --default-key $(KEYID) $(PACKAGE)-$(VERSION).tgz
 	gpg --verify $(PACKAGE)-$(VERSION).tgz.sig
diff --git a/NEWS b/NEWS
index 172fc7a..bbe4390 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,10 @@
-* Version 2.16 unreleased
+* Version 2.17 unreleased
+
+* Version 2.16 released 2012-06-13
+
+  * Improved logging.
+
+  * Improved performance of large sync queues.
 
 * Version 2.15 released 2012-05-24
 
diff --git a/ykval-sync.php b/ykval-sync.php
index 7f81983..12c81af 100644
--- a/ykval-sync.php
+++ b/ykval-sync.php
@@ -7,6 +7,11 @@ $apiKey = '';
 
 header("content-type: text/plain");
 
+if(empty($_SERVER['QUERY_STRING'])) {
+  sendResp(S_MISSING_PARAMETER, $apiKey);
+  exit;
+}
+
 $myLog = new Log('ykval-sync');
 $myLog->addField('ip', $_SERVER['REMOTE_ADDR']);
 
diff --git a/ykval-synclib.php b/ykval-synclib.php
index 4d3d3fd..0c87dca 100644
--- a/ykval-synclib.php
+++ b/ykval-synclib.php
@@ -435,13 +435,13 @@ class SyncLib
 	$this->log(LOG_NOTICE, "Local server out of sync");
       }
 
-      if ($this->CountersEqual($resParams, $localParams) &&
+      if ($this->countersEqual($resParams, $localParams) &&
 	  $resParams['nonce']!=$localParams['nonce']) {
 	$this->log(LOG_NOTICE, "Servers out of sync. Nonce differs. ");
       }
 
 
-      if ($this->CountersEqual($resParams, $localParams) &&
+      if ($this->countersEqual($resParams, $localParams) &&
 	  $resParams['modified']!=$localParams['modified']) {
 	$this->log(LOG_NOTICE, "Servers out of sync. Modified differs. ");
       }