Guys seems like in the last version of CCleaner the issue was solved but not on the same date release of Defraggler, the bug has been there for months!
When is installing there is a button to see details, if you press it all the log is visible but if you go closer to where the button was, it appears temporarily and then disappear when the log is updates. So annoying! I have reported this several times on Windows 7 SP1 x64!