I received an infected file by e-mail and send it to Antivir, Arcavir, Avast!, AVG, BitDefender, GDATA, Kaspersky, MKS_VIR and NOd-32 to be analysed and added to database. Kaspersky answered 30 minutes later saying that it had detected a virus and it would add to the data base in the next update. One hour later the virus already was in the data base of my update. AVG answered (auto-response) saying that had not found a valid serial with my email and it would be ignored. NOt added to database yet. NOD-32 said 2 days later that my file need you be zipped and password protected to be analysed. Antivir and Avast! answered 1 day later saying to have found a virus and that it would be added to database. However, in update following he had still not been added. Only 2 days later it occurred. BitDefender and MKS_VIR added to the DB 2 weeks later, without answer to me (I don't know if they added after my e-mail). Other companies ignored me It's a BIG difference that can define the quality of an antivirus software/company.