Galdor: I agree. The corpse thing reminds me of the find x lumber quest in Gothic 3. Played it many times and every playthrough I'm struggling to find the last one.
The minimap in Witcher 2 is flawed in the same way. Why would you not do it as it was in the first one? It was great!
Found them all by pure luck - look for areas with the necro-monsters in them, they're usualyl scattered around there.
There were 3 near the hut by the seaside, close to the whore tower and soldiers patrolling the area. One is pretty well hidden among the grass.
Other than that there's two by a caravan, another 3 near the Arachnos thing and another set of two a think....