NF.exe process high CPU usage

Hi,

I have installed Norton Family on two Intel Core2-based PCs and it has seriously degraded system performance because the NF.exe *32 process running under the system account uses a full core continuously.

The latest PC this has happened on is a fresh build of Windows 7 x64 SP1 with all updates.

I haven't seen any other posts for this scenario, so any help would be appreciated.

If this issue can't be resolved I will be looking for another product to protect my kids.

Thanks.