I actually think Ferrari deserves a lot more credit than that.
2005 was a disaster in every possible aspect. It started pretty bad with MS finishing the first third of the season with an average 5th and 3(!) DNF's. RB couldn't do a lot better and ended it with 2 DNF's and an average 7th. The next third was a little better with an average 4th for MS and 7th for RB (excluding the US results, ofcourse). The last third was again very bad with 3 DNF's for MS and average 7th and average 9th for RB.
Ferrari may have given up in 2005 at some point (Don't really remember when, but it was pretty late considering the results, maybe Turkey), but one must remember that the biggest problem was the tires, which in 2006 were a huge factor no less, maybe even greater, so the deficit in points in relation to Renault at the end of the NA tour was pretty understandable.
2007 wasn't supposed to be easy for Ferrari, at least in my view. Sure, they had the best car on the grid at the end of 2006, and they knew the Bridgestones very well, but the team has gone through a lot of changes at once. Maybe too many. 2 of its most valuable assets were gone and not only that, but after the great start in Australia they were already deep in the Stepney saga. The movable floor, which was prob. a good advantage was banned, and the team had to divert a lot of attention, money and time in order to get on top of this entire episode (Not to mention the wind tunnel problems and the possibility that Mclaren used some of the info it had). Nevertheless the recovery was pretty fast, and by the time they got back to Europe things looked a lot better. So all in all, I think they are doing pretty much OK.
As a fan I would have loved to see them doing better, especially in terms of reliability, which doesn't really have an excuse, but I think we should look at the entire picture. I am even convinced that we have a good team for years to come. They have proved themselves very useful in some really difficult times.
As for Monza, I think Ferrari will have some difficult time there, it's not going to be easy, and surely harder than Turkey. The Mclaren looks pretty good to me and it seems that it's gone through some serious work.
I personally don't remember Ferrari saying that their car is fast enough to win all the remaining races as is, but it's only obvious that in order to do so they must work hard and develop it to the end. Mclaren aren't going to stand still either.
They know well at Ferrari that it isn't going to be easy and acknowledged the threat on 2008:
http://www.autosport.com/news/report.php/id/61750
they have 1 second margin over Sauber who are ahead of Ferrari 
Or is it that the front and rear axles are spaced farther apart on the F2007 than on previous chassis 