To reproduce the problem...
1. Do clean install. Or better just temporarily rename the CCleaner options key in the registry.
2. Make sure your temp folder haves fresh files.
3. Run CCleaner and do Analyze. (Temp files newer than 48 hours are listed)
4. Go to Advanced settings. ("Only delete files in Windows Temp folders older than 48 hours" option is on by default?)
5. Do Analyze again. (Now only temp files older than 48 hours are listed)