My buffalo NAS has a keep-alive service (nassvc.exe I think) which keeps the unit from powering down until my PC is shut down.

This has worked no problem on my WIN XP/32 box for years, but does not work on a new Win7/64 system.

For the avoidance of doubt, it is definitely ZA blocking this service because it is ok if I kill ZA. I have also checked that the nas programs have "super trusted" status.

The trusted zone protection is "medium".

I read somewhere it can be because ZA is starting after nassvc.exe, but I don't know how to change this.

Can anyone help ?