This is a Dolphins football forum, should people be talking about the weather? Ronnie Brown is the team's #2 overall pick and is not doing anything to justify that, so people are very concerned, hence the large number of threads on the topic. I don't think people are giving up on him, just want him to play better. Brown is doing all the little things well (blocking, etc), but you expect your top RB pick to make some big plays, which he hasn't.
I think we all realize it's just 2 games, he could still end of with 1500yds, and 12 TDs, and be the greatest Dolphin RB ever. We also realize the OL is below average. Problem there is, Sammy Morris ran pretty well behind the line. Two more games like this, and Ricky will be starting.
Part of it is also the playcalling. 12 carries? 2 receptions? This "complete", "all-around", "feature" RB should get more plays coming his way.
I don't believe people are jumping off the bandwagon, just concerned. Two games is not enough of a "chance" and is certainly not enough to declare a "bust", but it IS enough to start to form opinions, and, in this case, the opinions are not positive.