When your are working with InDesign documents off of a server, InDesign, some times seems to be looking for the document fonts folder, over and over. This can cause the application to grind to a halt. See this thread on Adobe Forums.
RenameFontsFolder is a startup script that hides the Document Fonts folder from the application by simply changing the folders name.
You can download the script here.
To use the script, copy it to your Startup scripts folder and restart InDesign.
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