To Timmy,
The script
(http://dl.getdropbox.com/u/872430/Quicksilver%20Scripts/directdict.scpt)
asks Dictionary to quit once the results are in the Quicksilver window.
When Dictionary is launched again, it never shows me any previous
searches. I guess, its the Dictionary settings that is making the
difference.
Try this:
Quit Dictionary.
Activate Quicksilver.
Press "." key to enter into text mode
type: dict:///what
press tab
select open url and hit return
Do you see the previous searches?
If yes, then I cannot reproduce your problem.
If no, let me know.
I am using Leopard.