We've been using iTunes Producer to send files to iTunes. The problem is, the uploads are painfully slow and peppered with timeouts.
We have an iMac connected (by ethernet) to a BT router. Google, the BBC, Slashdot, and a host of other sites that I thought of off the top of my head pinged fine and gave pleasing results when using traceroute.
We have no firewalls installed. I tried changing the DNS settings to openDNS but got no improvement.
This is probably one of those obvious things. What's the problem?