Hi XTC46

What you say sounds pretty reasonable to me So please ignore my mixed ordering.
I just recalled to have spent hours searching software problems, while actually one
router was partly damaged (due to some loose contact) - this was years ago. I simply
realised that the focus was on malware, and I wanted to add a few more ingrediences.

According to your posts, you would:
- Identify the "affected" segments of the network (could be the whole one)
- Check the type of traffic there (malicious activity?)
- If so, detach identified nodes and clean them.
- If not, check the logs for collisions etc., re-evaluate your network design, ...
- Check the hardware.

Something like that?

Cheers.