Splash particles being emitted below grid

[nelpiper]

Hi guys.
I'm doing a simulation of a small boat on a stream. I a box primitive set as a emitter with "stream" turned on. I simulated the grid, the mesh. When came the time to simulate the splash, lots of splash particles started to be emitted below the boat (please, see pic attached). Yellow particles are splash, green particles are foam. Why is this happening? Anyone?
Thanks.
http://www.flickr.com/photos/20905836@N05/6336008982/

[FlorianK]

I've had the same problems a while ago, it could be resolution related but I thing this shouldn't happen in the first place and is a bug.