When I close an email in Outlook (2007), the whole Outlook Program closes; same with Word docs. Not just MS Office programs, this happens in other programs as well - eg Copernic Agent Professional: close down a search and the whole program exits!
Have run both virus and malware checks but nothing there. Only other possible clue is that the mouse pointer appears unduly sensitive (but can see nothing in Control Panel to reduce sensitivity). Am using single mouse click.
Any assistance appreciated . . .