Herbed Lamb and Pasta

150 g durum wheat pasta (1¾ c) 5 ml canola or olive oil (1 t) 250 g boneless lamb, any cut, cut into 1 cm cubes 1 onion, chopped 1 stick celery, chopped 10 ml crushed garlic, fresh (2 t) 5 ml dried tarragon 5 ml dried rosemary, crumbled ½ chicken stock cube dissolved...