virtualbox.org

I'm running a Debian 6.0 guest on a Mac OS X host, this is a new install after deciding to switch from Ubuntu to Debian. Everything seems to be working fine other than the fact my connection speed is just terrible, I can load simple Google search pages but for example if I try to load Speedtest it gives up and fails. My Ubuntu host is working fine, the connection speed is the same as on the host (around 1.5 meg). I also have exactly the same Vbox network settings on Debian as I do with Ubuntu.

If anyone could assist me with this that would be much appreciated!