I've had nothing but trouble with my downloaded version of HL2:E2. After a brief period of running fine it refused to start at all. My only remedy was to reset my machine to a previous restore point. Now, it won't start and gives me a message that the Steam servers are too busy and I should try again in a few minutes. That's been going on for days now. I have logged requests for help with Steam's support group but haven't heard a word from them on any subject. This is the first game I have downloaded from Steam and it will definitely be the last.