Steam is great for my one pc, works fine and perfectly and everything but for the other pc...
Me and my bro like to play counter-strike, so when we got a new pc downstairs and a router etc.. we decided to buy a new copy of halflife so we could play against/with each other on servers. So, i get this new copy of Halflife, new cd-key, unused and everything, go to verify it with steam aaaand "sorry, your cd key is unvalid or is in use". This annoyed me immensly, so i sent them an email, and still have had no reply. This was about 3 weeks ago, left us to only play on WON.
I guess its just lucky steam works on the pc i play esf on, because its great when it actually works.