When I tried to start Steam today (just 15 minutes ago), I came across a problem. I saw no "Logging in..." box. I opened task manager, and I saw Steam was running. So I double-clicked a game shortcut from my desktop. Nothing. I deleted ClientRegistry.blob (blob... =D) and tried again. Steam popped up with the "Updating" box and updated... hope restored, just to crash a burn. From there, once it finished, nothing happened. I restarted and tried again... still nothing.
Any ideas?