CCleaner 3.0
Changes include:
A new 64-bit native EXE designed specifically for 64-bit systems.
A new Drive Wiper tool screen under the Tools section, which allows users to securely erase the contents or free space on a specified drive.
Improved support for Internet Explorer 9 and the Google Chrome browsers.
We have also added improved cleaning support for HTML5 database storage, allowing CCleaner to effectively manage the next generation of web applications.
Additional cleaning support for Microsoft Silverlight Isolated Storage.
We've added three new environment variables (%SystemDirectory%, %SystemDirectory32%, and %SystemDirectory64%).
New application icon.
New Intelligent cookie keeping feature.
and more...
http://www.piriform.com/blog/2010/10/28/ccleaner-v30