VMware released VMware vCenter Update Manager 4.0 Update 1 Patch 1 on February 25th. This bug fix release resolves issues with the Cisco Nexus 1000V virtual switch and improves performance when scanning ESX hosts that are contained in a cluster.

In previous releases Update Manager would scan hosts in a cluster <span style="line-height: 115%; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; font-size: 11pt; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;">sequentially</span>; the patch changes this behavior so hosts are scanned in parallel, greatly enhancing scan speeds.

Click <a href="http://www.vmware.com/support/vsphere4/doc/vsp_vum_40u1_p1_rel_notes.html">here</a> for release notes.
Click <a href="http://downloads.vmware.com/d/details/vum40u1p1/ZHcqYmRqcCpiZGUlaA==">here</a> to download the patch.