Delete in Windows Explore extremely slow

When I right-click a file and click Delete (or alternately use File, Delete) in Windows Explore, there is about a 20-30 second lag time before the Delete File dialog box opens to confirm I want to move the file to the Recycle Bin. If I use Shift+Click, there is the same long lag to the Dialog to ask me if I'm sure I want to permanently delete the file. When I click Yes, the Delete is immediate. I tried using the ShellExView utility to disable and enable each shell extension I was suspicious of with no luck. Any help greatly appreciated.

I just went into Recycle Bin Properties and unchecked "Display delete confirmation dialog" and that resolved it. I've been working on resolution all day. Who knew it was so simple; that said, this is not "normal" behavior to have such a long delay and I would still like to know what is causing the lag in when the confirmation is displayed.