Good afternoon, Thank you very much for your explanation and for time spent on answering to my post. I have understood what you expected me to try ... But, I 'm afraid I'm not trained enough in PC knowledge, to do this kind of thing : excluding files from Norton. I am sorry but I, even, don't know "where or how" to do this. I have tried to have a look to Norton AV and Firewall and I didn't found the access to exclude files. Do you think this kind of "up-dating problem" on Malware software will be resolved, in a few days ? Perhaps, the best thing to do, for unexperimented user (as I am) is to wait for available correction which will be included on next versions, above 1.45. It's a same because I was really pleased with your software, easy to run and to understand. I hope the staff will resolve the problem. Excuse-me, once again please, for inconvenience. Many thanks, Dikssi13