TLA Systems has announced DragThing 5.1 is now available.

the press release states:

This is a major new release, with dozens of new features including:

• 
  
  
• New dock window styles like metal and translucent black.
  
  
• Completely rewritten preferences and dock storage code, with docks now
  
  saved as separate files, and support for XML exporting and importing.
  
  
• Much improved Desktop Trash, with many new options including displaying
  
  the number of items in the trash.
  
  
• Full control over how Exposé affects your docks and the Desktop Trash.
  
  
• You can display the version number of docked applications as part of the
  
  name or icon.
  
  
• Improved contextual menu previews, including support for Adobe InDesign
  
  and plain text documents.
  
  
• Powerful new AppleScript support, including "every" and "whose" keywords.
  
  
• New Traditional Chinese language support, with thanks to Rick Chen.
  
  

Besides all these great new feature, you can also use it to solve the skelton icon problem ;-)