I have several videos transcoded and hosted on my Pogoplug.  On average, I can stream anywhere from 6-30 minutes worth of video and then the stream locks up.  This happens when I'm streaming to my iPhone 4 (using the Pogoplug app) on my home wireless network, my work wireless network (university), and on my pc through the browser.  I've even tried using the browser on my iPhone and it still locks up after awhile.  Any suggestions?  I'm thoroughly stumped.