I posted a response to a separate thread and really its pertinent to WMS 3 so I will copy and paste the content here.
I can confirm that my client is also suffering the same issue, however there is no custom configuration to the extent that @HectorH has applied.
We simply have a Large Wowza EC2 instance which has been configured to mount the S3 bucket as per wowza docs. It uses the vods3 module and no further configuration changes. We have noticed the frequency of this event is increasing.
To note, we have another EC2 instance which has worked fine for months using Wowza version 2 I recall, this new large instance uses Version 3.