Anybody having this problem? When Avira's Luke File Walker finishes a scan about 50% of the time you can not shut the application down. The application is locked by the system. You are forced to do a shutdown to get out of it. This has been happening only on my XP Computer ever since they released version 10. Every time I tell Avira about it they tell me to do a clean install of the application. Sounds like they did not do proper research on XP since it works fine with Windows 7. Any ideas before I switch to AVAST?