- made shadedisplist not free all object displist data...

this messed with data caches which messed with assumptions made
   by drawing code (and was just silly not to mention). here
   be dragons...

source/blender/blenkernel/intern/displist.c

@@ -797,10 +797,12 @@ void shadeDispList(Object *ob)
 	
 	/* we extract dl_verts, deform info */
 	dldeform= find_displist(&ob->disp, DL_VERTS);
-	if(dldeform) BLI_remlink(&ob->disp, dldeform);
 	
-	/* Metaballs have the standard displist in the Object */
-	if(ob->type!=OB_MBALL) freedisplist(&ob->disp);
+	dl = find_displist(&ob->disp, DL_VERTCOL);
+	if (dl) {
+		BLI_remlink(&ob->disp, dl);
+		free_disp_elem(dl);
+	}
 
 	need_orco= 0;
 	for(a=0; a<ob->totcol; a++) {
@@ -1169,9 +1171,6 @@ void shadeDispList(Object *ob)
 		ma= give_current_material(ob, a+1);
 		if(ma) end_render_material(ma);
 	}
-
-	/* this one was temporally removed */
-	if(dldeform) BLI_addtail(&ob->disp, dldeform);
 }
 
 void reshadeall_displist(void)

source/blender/src/drawobject.c

@@ -1783,7 +1783,7 @@ static void draw_mesh_fancy(Object *ob, DerivedMesh *baseDM, DerivedMesh *realDM
 			dl = ob->disp.first;
 			if (!dl || !dl->col1) {
 				shadeDispList(ob);
-				dl = ob->disp.first;
+				dl = find_displist(&ob->disp, DL_VERTCOL);
 			}
 			obCol1 = dl->col1;
 			obCol2 = dl->col2;

source/blender/src/vpaint.c

@@ -247,7 +247,7 @@ void make_vertexcol()	/* single ob */
 	
 	if(dl==0 || dl->col1==NULL) {
 		shadeDispList(ob);
-		dl= ob->disp.first;
+		dl= find_displist(&ob->disp, DL_VERTCOL);
 	}
 	if(dl && dl->col1) {
 		int i;