I've just installed the new control room machine: "pianosa". It is a replacement for the old sun machine "op440m" .
It's now running Ubuntu 10.04 LTS 64bit. Unfortunately, the default 10.04 kernel is 2.6.32, which does not support pianosa's apparently very new network adapter, which is (from lspci):
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04
To get around this I temporarily added a PCI nic so that I could get on the network. I then added the Ubuntu kernel team PPA archive and installed linux-image-2.6.38-2, which is new enough to have the needed network driver, but not completely bleeding edge:
sudo add-apt-repository ppa:kernel-ppa/ppa
sudo apt-get update
sudo apt-get install linux-image-2.6.38-2-generic linux-headers-2.6.38-2-generic
Once the built in nic was working I removed the temporary one. Everything seems to be working fine now.
I have not yet done any configuration to integrate pianosa into the CDS network. I'll do that tomorrow.
 op44m has been moved into the control room rack next to linux1, in headless mode. If there is still a need to run scripts that only run on solaris, op440m can still be accessed via ssh as normal. Hopefully we can fully decommission this machine soon.