I recently downloaded the latest free, yeah, i'm a limpet; update for CCleaner from Piriform vs File Hippo.
I also accepted the CCleaner Browser. Wanted to try it.
I ended up with the following virus:
Filename: Google Toolbar Setup [1].exe
Malware type: Trojan.Dropper.Ge
It really messed up Chrome. Reverted to a clean restore and then ran WebRoot to destroy.
Went to FileHippo and downloaded the CCleaner update with no problems. Did not accept the browser.