Getstream starts to become unresponsive to HTTP requests after a few days

Hi, We run getstream on a mixture of DVB-T and DVB-S servers. We experience the weird problem where after a random amount of time (always more than a couple of days) you just are unable to connect to HTTP any more. Getstream is still running it's just you're unable to connect to the streams. Has anyone encountered this problem, or seen in the source code as to why this might happen? Thanks, James