it would be interesting to know if your problems are only above the 11,75Ghz Range...
Greets
It affects almost all frequencies higher than approximately 11,75Ghz
I just checked the Hotbirds. The "bad" transponders are:
11727V
11747H
11766V
11804V
11823H
11862H
11881V
11900H
11919V
11938H
11958V
11977H
12015H
12034V
12054H
12073V
12092H
12111V
12130H
12149V
12169H
12188V
12207H
12225V
12245H
12284H
12322H
12380V
12399H
12418V
12437H
12466V
12520V
12539H
12558V
12597V
12616H
12635V
12654H
12673V
12692H
12713V
12731H
Hope it helps....