SSH

My PC is a Linux machine - and I tend to log in remotely on a frequent basis. How could I log in from home, if I'd turned it off already! Also, it's not just 2 mins of bootup time, but another 5 mins to get applications ready, revert to what I was doing etc. And if anacron starts up, then for 15 minutes, the disk will thrash, just after bootup (running updatedb).

What would be nice is some way to make the machine run in much lower power mode - a bit like suspend-to-ram for a desktop pc, but with the ability to wake on remote login, or cron.