I thought they fixed this in this last update?
I don't play often except weekends, I wasn't even aware it was an issue. He wasn't a huge distance from me, maybe 6 squares on the map, and his HP was ???, but I was getting a party rate SP while solo waiting for him to come back.
Edit: I tried with someone in Gridania while I went not too far outside the city to Humblehearth (sp?). I was very clearly getting solo SP so I guess it's not an issue. Edited, Oct 17th 2010 3:06pm by Jeraziah