Any pointers:

I can’t seem to see the you tube videos down-loaded onto this site browsing in Internet Explorer (just the links which work fine) and similarly can’t watch Netflix. Both work ok in Chrome.

Checked for up to date flash player and reinstalled IE. No effect.

Some security setting maybe?

Use Chrome, then?

When you say you “can’t see them” and they’re “downloaded” what do you mean?

There’s just a blank section of post with the link at the bottom. If you right click over where the video would be shown it says ‘film not loaded’.

I know it’s my answer to everything but, try a malware scan? I can readily see how an infection might inject bogus proxy settings into IE causing it to fail to retrieve some content.