KVM FreeBSD install seems very slow


Installing FreeBSD iso from kvm within ubuntu 12.4.1. Seems very slow. over 1 hour. Any way to make it go faster?

This is the line i’m using to launch install
kvm -m 256 -cdrom FreeBSD-9.0-RELEASE-i386-disc1.iso -drive file=freebsd.img,if=scsi,index=0 -boot d -net nic -net user -nographic -vnc :1


Just to add Archive Extractions seems to take ages.