Thank you. That fixed it.
It also fixed the missing kernel.h.3.2.18-pclos2.pae.bfs file after re-installing that kernel.
I suspect your problem with the kernel had nothing to do with this, as what I posted was about cleaning up your old package lists and getting the package lists you needed to install task-pulseaudio.
Did you install the kernel as part of upgrading the system originally? That can cause problems.
A kernel should always
be installed after doing a full upgrade. It should never be included with the installation of other packages, whether upgrades or new package installations. In other words, do a full upgrade, install whatever packages you intend/want to and only after that has completed, install the new kernel.