However, your log shows that both the b43-fwcutter and the bcmwl-kernel-source packages finished installing. Neither driver downloads anything in their initramfs script. Also, drivers being busy wouldn't explain why kdeui takes 100% CPU. The strace of it looks like it's spinlocking on the apt pipe/socket, waiting for apt/update-initramfs to complete?
However, your log shows that both the b43-fwcutter and the bcmwl-kernel-source packages finished installing. Neither driver downloads anything in their initramfs script. Also, drivers being busy wouldn't explain why kdeui takes 100% CPU. The strace of it looks like it's spinlocking on the apt pipe/socket, waiting for apt/update- initramfs to complete?