Had a few issues with the vod/ series. Also when going from one server to another, it kept on crashing. I eventually removed both sub's from the box and reinstated them, hopefully it's okay.
I'm hoping, re-instating the XC api logins, has resolved the issue. The VOD & series takes ages to load, whereas before hand it was a matter of seconds. Switching between servers, the 'buzz app has stopped working' box would come up, and then a black screen. Fingers crossed, it'll resolve.