Comment 5 for bug 532733

note also that the VM itself doesnt hang, its just the disk IO ... if i stop the hanging process teh VM is usable as before.
if you want to reproduce install rootstock and run:

sudo rootstock -f test -s ubuntu-netbook^
(note that wont give you any access to the VM, try the thing below for this)

or to have more debugging abilities use rootstock to create an armel qemu minimal install (with username test and password test):

sudo rootstock -f test -s ubuntu-minimal -l test -p test --keepimage

then run qemu-system-arm as described at https://wiki.ubuntu.com/ARM/RootfsFromScratch and install the ubuntu-netbook task with:

sudo apt-get install ubuntu-netbook^