@Setanta,
The low setting on ors (which is but 3 years old) is set to be just below a boil. Id say about 180 or so. With the lid kept tight, it recycles any steam as a condensate and doesnt lose much water. The really slow and "below boil" temp is ok for setting and going to the beach for a day.
We still, cook the bastid on a patio wall because anything with an internal electric circuit can short out and start a fire from within.
There have been stories of fires from electric blankets. Thats why the really good ones(electric blankets, not slow cookers) use natural fibres.
Do not never make pasta dishes in a slow cooker. The sauces are ok but dont add pastas. Also, as far as noodles, we like to cook noodles separately and either serve the schmutz over top the freshly cooked noodles, or add the cooked noodles to the sauce, just before your ready to eat.
Cooking noodles all day in a slow cooker will turn a good al dente noodle into a roll of snotbread.