This is a feature. We didn't expect that anyone would like to run it
every time when starting the computer as usually it takes a long time to complete (you can always abort it by pressing Esc, though...).
Would like to see this feature added in the next release? For us, it wouldn't really be a problem...
For other users: there was a bug in the boot-time scan module in version 4.0.172 and earlier (with the symptoms described in the first post of this thread). It will be fixed in the next program update.
Vlk