Following on from my success installing Ubuntu 10.10 on a physical machine I thought I'd install Crunchbang 9.04 side by side to see if it played nice.
And it almost did. Nine out of ten - not completely free of errors but pretty good.
Installing was fairly straightforward, but the automatic resizing routine had problems mounting the existing ubuntu swap partition /sda5 but if you ignored these installation was fine. My only problem was that the mousepad was skittish and I ended up plugging in a usb mouse.
On restart Crunchbang had of course made itself the default operating system, but Ubuntu started and ran correctly. Rebooting and going into Crunchbang also worked as did various combinations of restart and power down.
In fact my only real gripe was wireless networking. We have two networks on campus - the first one is an older slower network that doesnt require complex end user configuration - basically just like in a lot of hotels and airports, connect to it, open a browser, and in this case, just login.
We also have a second more secure network, that requires a little more finger in the ear stuff. Crunchbang almost worked, detecting the network type and authentication scheme correctly, only to fall at the last hurdle by not providing GTC as an option for inner authentication. (Ubuntu 10.10 provides this and it works well)
This is kind of important as our secure network uses the same security model as Eduroam, meaning that one couldn't easily take Crunchbang to another university campus and expect to connect, and hence reducing Crunchbang's uselfulness as a lightweight environment for checking mail etc ...