Johan,
I'm using an Orange SPV. One other thing that could be important is that I'm also using Hekkus Sound System. I don't see why that should make a difference but I thought I'd better let you know.
It's certainly possible that I'm doing something wrong - but I did read that the behaviour of the multithreaded CGapiApp should be the same, which with this problem it doesn't seem to be.
Thanks.