I've installed LMDE and found that only one CPU was shown on System Monitor, so I've searched on the forums and followed the instructions on this post http://forums.linuxmint.com/viewtopic.php?f=189&t=126434 and installed linux-image-686-pae and linux-headers-686-pae.
The problem is solved, but now GRUB shows the options to boot to the 486-kernel and the 686 and I only want the second. Is it safe to remove linux-image-486 and linux-headers-486? Are there any other packages that should I remove?
Another question: Where is the device driver manager (ddm)? I can't find it.
Thank you for your help.