Can't update this programme, it gives the message bad checksum against all the updates I select. Anyone had this problem and solved it?Is Defender still in beta stage? like to use it but don't like to use software that has not been fully certified to avoid problems I can't handle. Thanks for any help. Marie p.s. Search and distroy is checked in the exception list in Windows Firewall. ** To leave the list, click on the immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=unsubscribe] ** If this link doesn't work then send a message to: ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, click on the ** immediately-following link:- ** [mailto:access-uk-request@xxxxxxxxxxxxx?subject=faq] ** or send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq