Process Explorer v11.20: Process Explorer now shows thread permissions, adds process working set minimum and maximum columns, and fixes a bug that allows it to run from read-only locations on 64-bit Windows.
http://blogs.technet.com/sysinternals/archive/2008/05/28/updates-process-explorer-v11-20-zoomit-v2-0-sigcheck-v1-53-handle-v3-4-and-introducing-sysinternals-live-beta.aspx