Eva1ns

I like Andavari's suggestion. If AVG cleaning were unticked by default it would have been better for me. When I wrote that AVG's logs show the program is working correctly I was being careless. It's impossible to know for sure that any program is working correctly. But the presence of logs gives me some comfort (and their absence when formerly they were produced daily was alarming.) The event log shows me that AVG has updated its knowledge of viruses within the last 24 hours. The scan log shows me the results of daily scanning, including actions taken against viruses and (as Andivari said) suspicious objects which I might attend to or ignore.

Ident, marmite, thank you for your replies. I will continue to exclude AVG from cleaning and am happy to withdraw this suggestion or see the topic closed.

I use AVG 9 Free anti-virus protection. AVG is one of the applications CCleaner cleans. Unfortunately, AVG includes the scan and event logs in its cleaning. This may be deliberate or it may be a bug. As an AVG user I want to keep these logs. They show that AVG is working correctly. Also, the scan log can be expanded to provide further information in the event that a suspicious object is found. I suggest these logs be excluded from cleaning. [initially, I thought the absence of logs meant AVG was not working properly and it took me some time to find out that CCleaner had removed them. Other people may have the same problem. I have now excluded AVG from the list of applications to be cleaned because I want to keep the logs.]