I installed ZA

4 days ago, having used Norton previously. I use a laptop on a home wireless network. Settings for ZA are the default ones. Since install I have had 524 high rated instrusions which have been blocked, which seems pretty high to me.
Is this normal, or is there something i'm doing wrong?

Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Internet Security Suite
Software Version:6.5