I'm using docker v0.6.6, Vagrant 1.3.5, virtualbox 4.1.24 and the docker vagrantfile (with some minor modifications to forward some ports).

Steps to reproduce:

git clone https://github.com/dotcloud/docker.git
git checkout v0.6.6
vagrant up
vagrant ssh
sudo su
docker pull ubuntu
docker run -t -i -h=test1 8db /bin/bash -c true
while true; do docker run -t -i -h=test1 8db /bin/bash -c true && echo done && sleep 1; done

the last line just repeats docker run -t -i -h=test1 8db /bin/bash -c true.

It takes a few (say 10-15) repetitions before it gets there, but when it does:

[error] commands.go:2044 Error resize: Error: bad file descriptor

I've seen other mentions of vaguely similar error message (mainly in relation to upgrading lxc) but this is a fresh docker vagrant VM...shouldn't be any issues I wouldn't think? It wouldn't be so bad it if consistently errored, but this inconsistency is quite unhelpful.