youtube won't let me watch videos-FIXED

Hi guys,
When i come today from school i went to my computer on youtube to watch some videos but for some reason i they won't play.It says ''Old flash?Go upgrade''with a link to adobe's flash player with the latest version of flash player,the problem is that i have it already installed and again it won't play videos.any help is appreciated.
Thanks

PS:videos can only be played on sites witch have embedded youtube videos and on the profiles of the youtube members but not on the actual page where it takes you when you 'click' on a video.

EDIT:never mind guys it's working now.seems it was youtube's problem