Please provide some information about the hard- and software used.

DM 7000:
GUI Enigma
[Moderator] Fremdimage, verstößt gegen die Boardregeln [/Moderator]

Only some channels on C-Digital work

Im getting some wierd errors on my DB 7000 [Moderator] Fremdimage, verstößt gegen die Boardregeln [/Moderator] on Thor2, some channels work fine, and some channels only give me 40% signal rate, while others give me 86%. I dont understand this, its on the same satelite so seems pretty wierd. The channels that dont work are the following:

Alle BBC kanaler
CNN
Discovery Norge/Sverige/Danmark
MTV
STAR
Travell
TV2-Zebra
VH-1 (VH-1 Classic works)
Voice

C+ channels work on reboot, but dont work after ive switched to one of the above channels. So c+ first gives me 86% SNR, then drops to 40% after switching channel. This is so wierd, help me please.