Machine kicks back to login screen

[Jim]

If I leave my machine idle for some period of time (about
20 minutes, it seems), it automatically goes back to the
login screen.

This seems to give me problems when I'm trying to copy a
large file from one machine to another on my home
network. The file starts copying fine, but about 20
minutes into it, it fails, saying something like "network
address no longer available" (I know that's not exactly
what it says, but something to that effect).

So I go look at the other machine and its back to the
login screen. How can I prevent the machine from
automatically going back to the login screen?

Thanks for any help you can provide.

Jim

 

[Paul McGuire]

Sounds like the machines are rebooting. maybe blaster worm

 

[Daniel A.]

Go to Desktop (right click) > Properties, Screen Saver. And
uncheck the "On resume, display Welcome screen".