I tested ZoneAlarm for 2 days now and must say that I'm still facing the same stability issues as a couple months back. Programs don't start or have a 10 second delay, System feels much slower in general as ZA is utilizing 10% of the CPU while I'm doing absolutely nothing. I also faced multiple blue screens after restarting my PC when ZA was installed. ZoneAlarm has great features and a really good protection, but I don't know why they are failing so hard to make the AV more stable and bug-free. Gonna stick with Deep Instinct... Stable, fast and good protection.