I have Comcast in the San Jose, CA area.

Fast... WHEN IT WORKS.

Every few minutes, it loses connection for about 10-30 seconds. Which means downloads usually break, there's no way to maintain any regularly connection (like a VPN or net game). F^&*ing name server doesn't seem to respond and then suddenly works again for no reason. It's not my wireless because I ALWAYS can access my administrator menu for the router wirelessly. Ping seems to work more reliably.

I'm getting so sick of this that I'm looking into Y!DSL... I don't care if it's slower... maintaining constant connection is more important to me.