I've been tearing my hair out about this and cannot seem to pinpoint any particular issue by googling. This happens in both Finder and any file open/save dialog windows. When I open a folder it takes a looooooong time for the list of files/folders to appear. It's not terribly consistent so I can't pinpoint any particular factor. It happens often though - but a long time I'm talking about 30 seconds or longer.
Has anyone else had this issue? Any suggestions would be more than greatly appreciated.