Rob de Veij has just updated RVTools to version 2.7.3. This excellent tool now includes the following additional features and fixes:

Version 2.7.3 (December 19, 2009)

• Files in .snapshot directories are no longer reported as zombies.
• CTK files are no longer reported as zombies.
• The problems with VM files which are placed in the root directory are now solved.
• Under some condition the filter screen terminated with an exception. This is fixed now.
• New fields on vDisk tab: ThinProvisioned and split.
• New field on vTools tab: Virtual machine hardware version.

Read the full releasenotes/documentation here. And make sure to get this new version, in my opinion this is one of the most valuable tools out there.