I use ZA Security Suite with Vista.
It won't perform the scheduled scans if the PC is in standby mode and each time the update is in progress it slows the PC right down taking minutes to open programmes.
Often programmes won't open at all.
This never happened when I used ZA (free) for internet access
with AVG free for email and virus control.
If I cannot solve the ZA problem I will go back to that set-up when my subscription runs out as it is so frustrating to work with at present.
Also I don't understand why a screensaver halts progress because surely the PC is 'working' when the updates are in progress.
Operating System:Windows Vista Home Premium
Product Name:ZoneAlarm Internet Security Suite