Different issues.
This redirect thing happens industry-wide periodically. A whole bunch of people from a whole bunch of websites and ad platforms are tracing these ads down, and will nuke pretty soon. This is not a localized problem.
The FLASH thing is separate, very much localized on certain machines, and easier to spot and repair.
Glad your other machine is fixed. This one is on our end.
Question, how can it be on your end, when it never happens on my end either at work on a crappy PC or at home on the Macs?