diff --git a/.gitignore b/.gitignore
index 44d0474..0c59f56 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 roundcubemail-0.3.1-dep.tar.gz
 /roundcubemail-0.4.2-dep.tar.gz
+/roundcubemail-0.5.1-dep.tar.gz
diff --git a/roundcubemail-0.5.1-CVE-2010-0464.patch b/roundcubemail-0.5.1-CVE-2010-0464.patch
new file mode 100644
index 0000000..6cd2065
--- /dev/null
+++ b/roundcubemail-0.5.1-CVE-2010-0464.patch
@@ -0,0 +1,17 @@
+--- program/include/rcube_html_page.php~	2011-01-29 08:55:12.000000000 -0600
++++ program/include/rcube_html_page.php	2011-02-10 12:34:16.439813090 -0600
+@@ -192,6 +192,14 @@
+             $page_header.= $this->charset . '" />'."\n";
+         }
+ 
++        // add hint to disable DNS prefetching 
++        if (!headers_sent()) { 
++            header('X-DNS-Prefetch-Control: off'); 
++        } else { 
++            $__page_header.= '<meta http-equiv="x-dns-prefetch-control" content="off" />'."\n"; 
++        }
++        
++
+         // definition of the code to be placed in the document header and footer
+         if (is_array($this->script_files['head'])) {
+             foreach ($this->script_files['head'] as $file) {
diff --git a/roundcubemail.spec b/roundcubemail.spec
index 25dcb26..3231dcc 100644
--- a/roundcubemail.spec
+++ b/roundcubemail.spec
@@ -1,8 +1,8 @@
 %define roundcubedir %{_datadir}/roundcubemail
 %global _logdir /var/log  
 Name: roundcubemail
-Version:  0.4.2
-Release:  2%{?dist}
+Version:  0.5.1
+Release:  1%{?dist}
 Summary: Round Cube Webmail is a browser-based multilingual IMAP client
 
 Group: Applications/System         
@@ -19,7 +19,7 @@ Source4: roundcubemail-README.fedora
 #Patch2: roundcubemail-0.2-beta-CVE-2008-5620.patch
 #Patch3: roundcubemail-0.2-CVE-2009-0413.patch
 #Patch4: roundcubemail-0.2-stable-pg-mdb2.patch
-Patch5: roundcubemail-0.3.1-CVE-2010-0464.patch
+Patch5: roundcubemail-0.5.1-CVE-2010-0464.patch
 Patch6: roundcubemail-0.4.1-confpath.patch
 Patch7: roundcubemail-0.4.1-pg-mdb2.patch
 
@@ -38,6 +38,7 @@ Requires: php-pear-MDB2-Driver-mysql
 Requires: php-pecl-Fileinfo
 Requires: php-xml
 Requires: php-mbstring
+Requires: php-pear-Net-IDNA2
 
 %description
 RoundCube Webmail is a browser-based multilingual IMAP client
@@ -150,6 +151,9 @@ exit 0
 %config(noreplace) %{_sysconfdir}/logrotate.d/roundcubemail
 
 %changelog
+* Thu Feb 10 2011 Jon Ciesla <limb@jcomserv.net> = 0.5.1-1
+- New upstream.
+
 * Wed Feb 09 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 0.4.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
 
diff --git a/sources b/sources
index 363ca1e..8ef4f31 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-451fc2229682d410f774365b3953dfad  roundcubemail-0.4.2-dep.tar.gz
+dcc8b0839ba92a39ad244653d2083079  roundcubemail-0.5.1-dep.tar.gz