This has just happened since the last few days!

I can get sound on everything else but not on You Tube. Also I can't access Pagoda Games - it flashes on then off leaving me with a blank screen (still with a toolbar etc)

chrissie, that happened to me too, the other day. I couldn't work out what it was, until I checked the sound slider bar that appears just to the right of the play button on any vid. Somehow it had been slid over to the left (muted in effect) -- I hadn't touched it. It actually quirked like that on a couple of videos. Seems to be ok now, though.

(Double check also that the speaker icon doesn't have a mute "x" next to it.)

Wow! that was quick Rushes! but thank you so much as moving the slider worked!

A lot of strange things seem to be going on on my PC at the mo EG:I mainly use Office Publisher 2007 but all of a sudden I've got Publisher 2010 icons next to them like it's snatching & I have to right-click to open up in my 'native' 2007 Publisher?

Glad that fixed the problem!

Not sure about Office Publisher. But I'm sure someone else will know what's going on!

Happened to me at about same time.
I checked, fiddled, screeched.
I played with the mute button, adjusted volume controls, plugged and unplugged, boot and reboot, did system restore, adjusted firewall, toggled Norton settings...

Then all of a sudden it blared --- since my volume was on full - scared me silly.

Many people seem to be having this problem -- YouTube sound being muted by default. It happens both on Mac and PC.

Best I can tell is that the problem is caused by a Flash update. If you don't want YouTube muted by default, and if the problem keeps recurring, they say to uninstall and reinstall Flash, deleting certain files before reinstalling
http://forums.adobe.com/message/4041846#4041846

Thank you Jenny100 for the info!, it is also reassuring to know that it isn't only me experiencing this!

I have experienced the same non-sound problem also, Chrissie. Now that I know the reason, it's easy enough to just move the slider to the right. Thanks for this heads-up, fellow Boomers
Sandy

Yes !! Thanks for the tip. Thought it was something wrong at MY end !!

Happened to me too.