The only gripe I have about Steam, is the fact that now whenever I click that little icon on my desktop to boot up the Manager of Football 2012 Edition, is the fact that I have to wait a few moments for Steam to boot up and ask me if I was to load Steam in offline mode, in which I press "Yes" as usual, then I have to wait a few more moment for Steam to get it's **** together and just load up the sodding game.
Otherwise, it's fairly non-intrusive, unless you want to turn your laptop off, where it is always still running. I then have to wait a few moments for my computer to ask me whether or not I was to "Force Shutdown" or "Cancel", for then I have to hang around while my laptop accepts the fact I have pressed "Force Shutdown", I then wait a few more moments for the Steam icon to spas-out in the corner of the screen (I can't close the Laptop lid yet as it will go into power-save instead of shutting down), and finally the laptop reaches that shutdown screen and I can finally leave my laptop and miss my bus.
Gets a bit tedious after the 4th time.