myjavascriptajax.js load error

Once in a while a user will not be able to load, display, reload a page. Nada. The only solution is to rebood the server using ssh.

OK, looking in the user's error log of what is loading or not. It says that a file /js/myjavascriptajax.js is not found.
What is looking for this file and/or where is it? On my install it does not exist.

PS. I don't think this has anything to do with the hanging server. But I am just looking for things to fix I guess.

vshare 2.6, vshareskins 2.6