Another Youtube question

I am running MacAir with 10.6 (not mountain Lion). I have also looked at the boards on various similar problems but didn't see this. I have had flash and click to flash on this machine for over a year. All of a sudden, videos will not load on youtube unless I right click on the video and "restore flash". It just says "Loading" if I dont'. I have tried to unintall and reinstall flash but same issue.

Thanks.