diff --git a/main/core/pom.xml b/main/core/pom.xml
index 40febc2a4..13c87cdd7 100644
--- a/main/core/pom.xml
+++ b/main/core/pom.xml
@@ -18,8 +18,8 @@
 	<name>Cryptomator WebDAV and I/O module</name>
 
 	<properties>
-		<jetty.version>9.3.1.v20150714</jetty.version>
-		<jackrabbit.version>2.10.1</jackrabbit.version>
+		<jetty.version>9.3.3.v20150827</jetty.version>
+		<jackrabbit.version>2.11.0</jackrabbit.version>
 	</properties>
 
 	<dependencies>
diff --git a/main/core/src/main/java/org/cryptomator/webdav/WebDavServer.java b/main/core/src/main/java/org/cryptomator/webdav/WebDavServer.java
index 64870545f..76e92e185 100644
--- a/main/core/src/main/java/org/cryptomator/webdav/WebDavServer.java
+++ b/main/core/src/main/java/org/cryptomator/webdav/WebDavServer.java
@@ -40,6 +40,7 @@ public final class WebDavServer {
 	private static final int MAX_THREADS = 200;
 	private static final int MIN_THREADS = 4;
 	private static final int THREAD_IDLE_SECONDS = 20;
+	private static final int CONNECTION_IDLE_MILLIS = 100; // idle connection slow down random access on WebDAVFS for some reason. reconnect overhead can be tolerated
 	private final Server server;
 	private final ServerConnector localConnector;
 	private final ContextHandlerCollection servletCollection;
@@ -50,11 +51,14 @@ public final class WebDavServer {
 		server = new Server(tp);
 		localConnector = new ServerConnector(server);
 		localConnector.setHost(LOCALHOST);
+		localConnector.setIdleTimeout(CONNECTION_IDLE_MILLIS);
 		servletCollection = new ContextHandlerCollection();
 
-		final ServletContextHandler servletContext = new ServletContextHandler(servletCollection, "/", ServletContextHandler.NO_SESSIONS);
-		final ServletHolder servlet = new ServletHolder(WindowsSucksServlet.class);
-		servletContext.addServlet(servlet, "/");
+		if (SystemUtils.IS_OS_WINDOWS) {
+			final ServletContextHandler servletContext = new ServletContextHandler(servletCollection, "/", ServletContextHandler.NO_SESSIONS);
+			final ServletHolder servlet = new ServletHolder(WindowsSucksServlet.class);
+			servletContext.addServlet(servlet, "/");
+		}
 
 		server.setConnectors(new Connector[] {localConnector});
 		server.setHandler(servletCollection);