Google ToolBar can be hacked, domains hi-jacked and redirected according to Roger Karlsson. He has videos as well. Apparently this is a crazy problem only on Windows Internet Explorer. They have some interesting graphics as well. Hey Google people, time to investigate?
I might actually gain some respect for the Department of Homeland Security if they devoted resources to investigating stuff like this and warning the public. We need a sort of IT Surgeon General to warn us that easily/frequently hacked stuff like IE are bad for our health.