I have all of the newer kernels, test kernels, etc. on my laptop. But the desktop machine with LXDE won't install any kernels. I'm still on the kernel on the 2010.12 livecd. I mark to install either the 18.104.22.168 or the 2.6.37.x. They appear download, install and return to synaptic. When I try to close synaptic, I get a message, "Do want to quit without saving?" (or something like that). The kernels have 'not' been installed. Any ideas?