I have stumbled across a way of crashing NOD32. If I scan or clean my mailer directory* and select email files in objects to diagnose, at precisely the same point in the scan or clean, NOD32 will simply disappear. No error messages, nothing in Event Viewer (this is on XP Pro SP2) and Dr Watson could not care less. All that happens is I am left with undeletable entries in the NOD32 Scanner logs with status as 'scanning' or 'cleaning'. If I do not select email files in objects to diagnose, NOD32 happily scans or cleans the 28,000 plus files it finds. Out of curiosity, does anyone know, or think they know, why NOD32 is behaving like this? *I avoid relying on mailers such as Outlook that store email in idiosyncratic file formats as great lumps on the hard drive waiting to be corrupted, so my mailers - Polarbar is my current default - store each email separately in formats that can be readily accessed even by the primitive notepad provided in Windows.