Could be.
So for the OP:
what channel(s) is this on? live or recorded? If recorded, is it there when you replay the same section of the recording? What receiver do you have and does it happen on all your receivers? what are your signal strengths on the various satellites (what you posted does not tell us anything - your 101 signals should mostly be close to 100, your 99ca/cb and 103ca/cb signals should be high 80s to mid 90s on all transponders. Ignore 99s and 103s.
There are many possible causes of your problem that are nothing to do with the LNB going bad.