311 Picture/audio freeze

[laman400]

I posted this in the forum section, and so far have gotten no replies, so maybe I should have posted here first. Sorry for the duplication. I have been experiencing 5 second picture/audio freezes on all 4 of my 311 receivers since they all received the P431 firmware update about 2 weeks ago. The freezes are on all channels, and on all 4 receivers. I have done the soft and hard resets to no avail. The freezes continue 4 to 5 times an hour on all 4 receivers on all channels. Anyone else having the same issue with their 311 receivers after receiving the P431 update a few weeks ago? Thnks for any input.