I just installed Ubuntu 12.04 LTS for my venerable father, (87 years!) Cups unfortunately seems clearly broken on this OS release, and I was not able to setup functionally his Canon i-SENSYS mf4270 network printer. Meanwhile I've choose a Dell 3110cn also available on our network which works perfectly under this OS. (With 10.04 LTS Ubuntu version, Cups correctly handles this Canon printer...)
Does anyone have a solution?
I have not either unfortunately found a plugin for GKrellM for a Dell Vostro 410 for this OS vesion...