I recently had some help solving an issue I was having with the Full Scan getting stuck. It was not until the option for scanning compressed files got disabled that the full scan would finish. This issue didn't exist last week or the weeks before. It appears to be a memory leak, because when the full scan is run without compressed files being scanned the usage never goes over 20%. My primary fear is that the issue is malware manipulating the virus scanner, but confusing considering the issue happens mainly with the compressed file scan option.