Some cookies not being deleted.

I have CCleaner v5.05.5176 (64-bit), running in Windows 8.1. 64-bit.

The Cookies on Computer window shows that 4 cookies are never deleted. They are: launch.newsinc.com, local, localhost, and s.ytimg.com.

I have noticed this over the last several version of CCleaner.

Why are they not being deleted?

Place a check mark in adode flash of the second tab (s.ytimg.com is a flash cookie)