Not sure but it's possible that kernel upgrades (those two, linux-image and restricted-modules, are kernel upgrades) are listed as things that should not be updated among other things. Basic reason is that if your current kernel works fine, you should not switch it (same reason why you don't upgrade your BIOS every other day). You could try
Code:
sudo apt-get install linux-image-386 linux-restricted-modules-386
to specifically ask apt to install those two packages. I don't guarantee it works but it could, hopefully, give at least a reason why not. But even if it didn't, it isn't a real problem: if your hardware is working fine with your current kernel, and you don't need to specifically have a slightly bigger kernel version number (bigger version isn't necessarily better), just be happy and do not upgrade. Upgrading a kernel could in a bad case lead to trouble with your hardware or software.
I myself don't upgrade my kernel unless there's a security reason to do it, or if I need to get some kernel modules that aren't in the stock kernel, in which case I recompile it myself. But basically, for a desktop pc, it's not needed to upgrade kernel every once in a while; I upgrade the whole system from time to time anyway (like once every two years, for example), and that's when the kernel along with everything else gets upgraded. For example some people might upgrade from Fedora Core 3 to 6 or something. Don't fix a working thing
