It is good on wifi. I am impressed by the relatively low cpu usage at the get go.

I see that it is using gst-launch to feed to localhost - what are you doing to stream onto the network? Some mono library?

Regarding udp, does that create problems for trying to go over the WAN/internet as opposed to a LAN? If it does, perhaps there could be a udp/tcp option? I know tcp gives issues with resends --> latency etc whilst udp just streams on carelessly, but some routers kill udp traffic.

As for errors, if one closes the client smartcam then the n900 streamer crashes BUT the gst-launch process remains. Not good for battery . Would be nice if it stayed up streaming so that you could go back but of course, the port is closed so.... but the n900 process should be killed of course.