First, uninstall Flash by using the Flash Uninstaller at the link below..
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=tn_14157
Once that's done, then visit the site below and reinstall Flash..
http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash&%3BLang=French&%3BP5_Language=French
If you have more than one browser, visit the second link with each browser.. For example, Firefox and Internet Explorer install Flash in different ways. Firefox downloads an installer file where you then install from.
Hope this helps.
Grif
I use Firefox, and normally have no problems. I can watch CNET flash videos from the CNET TV links, but if I search for a video, and try to watch it, it won't work. Or, for example, on today's page there is a video here http://reviews.cnet.com/Microsoft_s_Surface_computing/4660-10621_7-6737942.html?tag=cnetfd.mt
and this will not play. Anybody else having this problem? They used to play. These don't play on my Mac or my Windows machine. Is this a recent problem at CNET?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic