asset panel folders keep expanding

I'm running Dreamweaver MX 2004 with the latest updater applied and the asset pannel is driving me crazy.  I occasionally run into folders that will not collapse in the asset panel.

To give you an idea of what the window looks like when I open it (hopefully this will display properly)

-myFolder
  |-- file1.cfm
  |-- file2.cfm
  |-- file3.cfm
-myOtherFolder
  |-- file4.cfm
  |-- file5.cfm

What's happening is when I click the "-" sign next to "myFolder" to collapse it, everything works fine. I get something like

+myFolder
-myOtherFolder
  |--- file4.cfm
  |--- file5.cfm

BUT... when I then click the "-" sign next to "myOtherFolder" to collapse it as well, both folders fully expand to show their contents, leaving me with this again

-myFolder
  |--- file1.cfm
  |--- file2.cfm
  |--- file3.cfm
-myOtherFolder
  |--- file4.cfm
  |--- file5.cfm

I have no idea what's differenent about the folders that are doing this but I have identified about 8 of them located on different servers that are doing this.

any ideas?