It means exactly what it says, ufw hasn't been updated yet to use conntrack. They've had a patch upstream for a while now but not done anything with it - https://bugs.launchpad.net/ufw/+bug/1065297
Thank you for the info.
]]>Linux version 3.6.7-1-ARCH i686 (gcc version 4.7.2 (GCC) ) #1 SMP PREEMP
ufw.service - CLI Netfilter Manager
Loaded: loaded (/usr/lib/systemd/system/ufw.service; enabled)
Active: active (exited) since Sat, 2012-11-24 09:53:40 EST; 2h 39min ago
Process: 238 ExecStart=/usr/lib/ufw/ufw-init start (code=exited, status=0/SUCCESS)
CGroup: name=systemd:/system/ufw.service
Nov 24 09:53:33 linux-arch systemd[1]: Starting CLI Netfilter Manager...
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:37 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:39 linux-arch ufw-init[238]: WARNING: The state match is obsolete. Use conntrack instead.
Nov 24 09:53:40 lunux-arch systemd[1]: Started CLI Netfilter Manager.