This program has all the two days work. Then worked no longer scan. The real-time scanning turned on constantly in and out. All launched scans stopped at 0%. The search for viruses / Trojans with other (free) programs remained inconclusive as well as the countless follow instructions on McAfee's support site or Internet forums or the Virtual Technical Support McAfee. Conclusion: either this program has teething or I've caught a virus / trojan in spite of an extra paid antivirus software. The money would have been able to save Mc Afee: Put 6!
ADDENDUM: After successful installation of Kaspersky Internet Security has been successfully scanned my computer and found a Trojan and removed. This was all McAfee programs I tried had escaped. So spend Better a few euros more.