I can ping it, but I still can't connect to that url with Mosaic. I get:
Requested document (URL http://lsi.usp.br/~jecel/merlin.html) could not be accessed.
The information server either is not accessible or is refusing to serve the document to you.
Oooops! I goofed on the URL. It should have read:
Sorry about the inconvenience. I looked at the the address several times and failed to see the problem.