Hi. We are running XP Home SP3 and are using BD Antivirus 2009 exclusively. No other malware, spyware, firewalls or anti-virus programs. Our issue is with Deep Scan option only. Program runs for short while then freezes up entire system. We have to reboot evrytime as CTRL-ALT-DEL does not respond. No error messages appear. We did apply a patch we found at Bitdefender Tech. But that did not fix issue. Any help is appreciated. Thank you.