hey Keith - I think this is the same issue. at least for me. If you are doing hulu, with no crashes; that just tells me that my wifi network must be having issues, and not the other possibilities. This discussion mentions three key problems:
1) Wifi not working fast enough, so switch to hard wired and see if it crashes
2) Encoded movies are encoded with too much resolution and eating lots of bandwidth to work
3) UPnP as served by different applications, seems to behave differently. Not sure how the Bluecop repository sets up hulu, or what data transmission layer it uses. Might network connection might be to slow. I am only doing 0.13 MBPS download speed. So this is a lot of speculation.