I have an older computer with a system disk of 40 GB. It was full. I used ccCleaner but still could not get enough space. In browsing drive files, I found that Google Chrome does not delete the old update and install files. There were 10GB of data in the files. I researched this and found that - yes - these files can be deleted. My Hard Disk now has over 10 GB of free space. almost 30% was taken up by google chrome updates. I SUGGEST that ccCleaner add this to the cleaning application. Would appreciate any comments.