Unicorn via VirtualBox

Hopefully I’m not barking up the wrong tree here…

I am attempting to use unicorn as a production web server in a Windows
environment using Ubuntu 10.04 through VirtualBox. Everything works
inside the linux environment, but the pages load really slow inside the
windows environment, or when I access the server through another
computer on
the network. When I look at the log file, the requests are returned
quickly, the pages just render slowly on the client side.

I experienced a similar problem with webrick, which I solved by changing
:DoNotReverseLookup => nil,
to this:
:DoNotReverseLookup => true,
in /usr/lib/ruby/1.9.1/webrick/config.rb

Any suggestions on how to deal with this in unicorn?