Hi Thanks to Yahoo, we now got two more general purpose Ubuntu slaves for Jenkins. This should help with removing build queues. Both new slaves (ubuntu4 and ubuntu5) should have the exact same tools and packages installed as the other Ubuntu slaves. If not, please report that here.
As always, try tying your build to all Ubuntu slaves, rather than a specific one. This will soon be enforced by scripts which will reassign builds tied to a specific Ubuntu slaves, to the general "ubuntu" label. /niklas