After a bit of clarification from Yorkshire based sage, Mr. Katz, it seems that I did a nice new problem at Earl Crag on Thursday. This climbs what is listed as boulder 24, project 6 in the old Yorks bouldering guide.
On Thursday I climbed it by stepping off the block onto the arete and moving right up the wall to the slap for the top (7b+/c). Been back this morning and - after settling some unfinished business on the Hitching stone - I did it from a sitter starting to the left of the arete, doing a big span up to an edge then moving back right round the arete (tricky!), onto the face and on for the slap for the top (7c+?).
Some pics...
...it's called Feel the Burn, if you hadn't worked that out.