I have just downloaded the latest version and have found i now have a Yahoo tool bar installed as well!! Can sombody tell me how to remove it please??

You could reinstall CCleaner and at the bottom of the setup options page deselect the install Yahoo toolbar option. There is also a toolbar free version and a slim version [no toolbar, English language only] located on this page.

Remove it from the add/remove programs part of the control panel. Just scroll down and uninstall it.

many thanks

miles

Yes, the Yahoo! toolbar sucks and it sucks that CCleaner is bundled with such junk.
You was asked when installed if you wanted to install that, and you could uncheck it. You should pay more attention when installing stuff, not just repeadly press the "Next" button.
Next time, you should get the "slim build", it comes without Yahoo! toolbar.