Every site that I visit the Flash video's are corrupt (see screengrab)

I've removed flash for Opera / IE and re-installed, cleared the cache and reset the Flash settings /cache. None of the above makes any difference. Sadly its no every video but does seem to affect YouTube the most.
I thought this might just be a home PC thing, but my works laptop has started doing the same as well.
any suggestions?

I've removed flash for Opera / IE and re-installed, cleared the cache and reset the Flash settings /cache. None of the above makes any difference. Sadly its no every video but does seem to affect YouTube the most.
I thought this might just be a home PC thing, but my works laptop has started doing the same as well.
any suggestions?