I have Avast Mac Security free on my macbook pro. I had a virus picked up through mail and ran a complete scan. It found two infections but there are 9615 files it was unable to scan. I then ran two additional scans in the following days and there were no more infections. However the "unable to scan" files were anywhere from 1769 to 9615. I can't get any additional info on these files.
Also, there is nothing in my virus chest. Is this working properly? I did forum searches and the postings I found all said I could expand the information on the report. I can't expand any information for these files.
This is a screenshot: