Well, it seems to be OK now, after I put the laptop to sleep for a bit.

I've been using it with no probs for a month. Thought it was supposed to be better than MME with the internal soundcard but I've just tried the latter and I think it's fine. Plus it seems to get rid of the soundcard in use message too.

Maybe I'll try MME with Sonar also. When I'm not mobile I use ASIO with a Tascam 122L.

Thanks