I am experiencing intermitent picture/audio freezes on all 4 of my 311 receivers. The freezes last 3 or 4 seconds, then the programming continues as if nothing ever happened. It is occurring on "ALL" channels on all 4 receivers. All 4 receivers recently received the P431 software update about 2 weeks ago, and that's when the problem seemed to begin. It occurs maybe 4 or 5 times each hour on all 4 receivers. Has anyone else had the same problem on their 311 receivers since the P431 update came out? How should I repoirt this to Dish so they don't just blow me off? Thanks for any help.