Lucky me....
This, folks, is a perfect reason not to want the latest software update as soon as it's released.
Based on the fact that a grand total of 4 people report problems and they are 3 different situations (one OTA only, and the other three report problems in different situations and different channels from each other), and other people report no problems, I would not jump to conclusions.
When a set of channels goes out due to uplink problems, there are dozens of people posting to complain. Statistically, it seems unlikely that there is a problem with so few complaints.
Generally, when a software upgrade goes through testing, and a problem is not found in testing, it is because the problem is with something
unrelated.
For example, the Fox/ABC audio problem of L614 was not found in beta testing, because the problem fixed by L614 was with NBC/CBS video - just the opposite in two ways.
However, in this case, the two people report obvious problems with the
same channels that were fixed. It seems highly unlikely that in-house testing and beta testing did not catch obvious problems with the same channels.
But, it is very common human psychology to notice problems with something that they are now focused on.
For example, the common channel with all the pixelation reports is ABC in San Francisco. However, reading reports shows that ABC in San Francisco has been notorious for bursts of pixelation for well over a year - long before any of the recent software upgrades. In fact, one year ago, a DirecTV viewer commented:
Anyone else getting pixelation/breakup on KGO HD channel 7 in the Bay Area tonight. Seems to be specific to the broadcast, but figured I'd check here also to be safe
So, I doubt that there is a new problem with satellite-delivered locals.
OTA is another story - it seems that the OTA software is very sensitive, and each software upgrade is associated with numerous reports of improved or deteriorated OTA performance. So, we will need more time for more reports on L615 OTA.