Ride wise I think the old Cindercone feels heavy, although I'm not sure if its just the wheels, the whole build in general or the other bikes I'm comparing it to. It certainly takes more effort to hang it up next to its friends in the garage...
It could be the wheels. My 97 Kilauea weighed 24.7 when I bought it. Not heavy, even for a rigid bike, but a lot heavier than Kona's claim. The wheel package weighed just over 9lbs for an XT/221 wheelset with LX cassette and wire bead Scratch and Sniff. I never quite worked out why it was all so heavy, even taking into account the plain-gauge spokes, but I didn't think it was good value on a £1,000 rigid bike. Albeit it was a well-built wheelset, still true when I sold it. But with hand-built XT/517/DT Rev/XT cassette and kevlar Explorer/Escape I knocked 1.8lbs off and the bike felt quite a bit livelier.
I would guess a 94 Cinder Cone frame in size 19 weighs around 4.8/4.9lbs, which is pretty good for a mid-range frame. Ride with pride.