I am reasonably sure the Youtube player is no longer Flash, but I can look it up. Other than that, there shouldn't be a Flash player running. I just checked the source of the forum frontpage and there is no evidence that there is one, so maybe you should make sure you don't have malicious software installed in your browser that inserts bad code into web pages, since you appear to be the only one affected as of now.
I am reasonably sure the Youtube player is no longer Flash, but I can look it up. Other than that, there shouldn't be a Flash player running. I just checked the source of the forum frontpage and there is no evidence that there is one, so maybe you should make sure you don't have malicious software installed in your browser that inserts bad code into web pages, since you appear to be the only one affected as of now.
“This is how humans are: We question all our beliefs, except for the ones that we really believe in, and those we never think to question.”
- Speaker for the Dead, O.S. Card