CCleaner - SP3 - Corrupt Registry Entries in CCleaner Posted March 6, 2009 As much as I appreciate your response, I am fully aware of the risks involved in installing a service pack and am quite experienced in addressing the other issues you suggest. However the possible issues involved in installing SP3 are well documented; the link I provided in my original post was one of many. Not a flame, not a shot, but your input failed to answer my question whatsoever. Although some may find your response useful, none of it has anything to do with my original question. At this point I will assume the answer is no unless someone from Piriform can address this directly with a decisive response. Appreciate you taking the time to respond. Regards.