Firefox 3 - locate in bookmark folders....Found!!

Yeah - where is it?? I'm trying to keep a list of places (!?&*) about the issue:

• Mozilla bugzilla #393510- place UI mockup
• David McRitchie's places page from his pages on firefox
• A news posting on locate in bookmarks
  

[Update:] It turns out that there are two plugins that provide similar functionality!:

• Show Parent Folder - Which shows Parent Folder in list view of Bookmarks/Library.
• Go Parent Folder - Go to parent folder of link in Library/Bookmarks.