Disappearing channels !

Hi Guys, can anyone help me ? Some of my channels have started to vanish eg.channel 4,sky one to name but two ! I have heard a rumour that N*L are very close to blocking the Starview boxes, any truth in this ?

 

if u read the posts in forums u would have found out what to do,factory reset autoscan,emu to on.

 

thanks Cactikid, bit of a hollow clang there ! sent the post then found my answer was already posted !