Re: Unwanted software. Its a fact of life that much free software carries various other stuff with it, toolbars are a favourite it seems. You just have to go carefully and make sure you untick anything you don't want. Even CCLeaner has options to install various things including I think a toolbar.
YTD has had a number of updates in recent months and you need to keep up with them as it sometimes won't work correctly. It seems Youtube keeps making changes that it has to keep up with.