diff --git a/files/apts/nova b/files/apts/nova
index 405d53b..9eefed7 100644
--- a/files/apts/nova
+++ b/files/apts/nova
@@ -1,4 +1,5 @@
 dnsmasq-base
+dnsmasq-utils # for dhcp_release
 kpartx
 parted
 arping # used for send_arp_for_ha option in nova-network
diff --git a/files/apts/preseed b/files/apts/preseed
deleted file mode 100644
index 8712d5d..0000000
--- a/files/apts/preseed
+++ /dev/null
@@ -1,18 +0,0 @@
-# a collection of packages that speed up installation as they are dependencies
-# of packages we can't install during bootstraping (rabbitmq-server, 
-# mysql-server, libvirt-bin)
-#
-# NOTE: only add packages to this file that aren't needed directly
-mysql-common
-mysql-client-5.1
-erlang-base
-erlang-ssl 
-erlang-nox
-erlang-inets
-erlang-mnesia
-libhtml-template-perl
-gettext-base
-libavahi-client3
-libxml2-utils
-libpciaccess0
-libparted0debian1
diff --git a/files/glance-api.conf b/files/glance-api.conf
index 3499ff7..bb758af 100644
--- a/files/glance-api.conf
+++ b/files/glance-api.conf
@@ -24,7 +24,7 @@ registry_port = 9191
 
 # Log to this file. Make sure you do not set the same log
 # file for both the API and registry servers!
-log_file = %DEST%/glance/api.log
+#log_file = %DEST%/glance/api.log
 
 # Send logs to syslog (/dev/log) instead of to file specified by `log_file`
 use_syslog = %SYSLOG%
diff --git a/files/glance-registry.conf b/files/glance-registry.conf
index 351b09f..1e04186 100644
--- a/files/glance-registry.conf
+++ b/files/glance-registry.conf
@@ -13,7 +13,7 @@ bind_port = 9191
 
 # Log to this file. Make sure you do not set the same log
 # file for both the API and registry servers!
-log_file = %DEST%/glance/registry.log
+#log_file = %DEST%/glance/registry.log
 
 # Where to store images
 filesystem_store_datadir = %DEST%/glance/images
diff --git a/stack.sh b/stack.sh
index 841cbb4..78851b9 100755
--- a/stack.sh
+++ b/stack.sh
@@ -826,6 +826,7 @@ add_nova_flag "--ec2_dmz_host=$EC2_DMZ_HOST"
 add_nova_flag "--rabbit_host=$RABBIT_HOST"
 add_nova_flag "--rabbit_password=$RABBIT_PASSWORD"
 add_nova_flag "--glance_api_servers=$GLANCE_HOSTPORT"
+add_nova_flag "--force_dhcp_release"
 if [ -n "$INSTANCES_PATH" ]; then
     add_nova_flag "--instances_path=$INSTANCES_PATH"
 fi