I have been working with Hugin 0.7 now for a total of about maybe 8-10 hours in the last couple of days. Here again is the original from Autostitch (I made one using Panorama Factory too, but it looks pretty much the same):
Here is the result from Hugin:
Take a look at the larger images -- they are not huge (just 480 pixels tall and less than 250kb). Notice that Hugin fixed the ghosting pretty well! Also, notice that the horizon is jagged in places and is wavy.
I have to say that Hugin is one of the most frustrating pieces of software that I can recall using in years. First off, there is essentially no documentation and the tutorials on the site often contradict each other. It seems extremely buggy and stuff doesn't work like the tutorials say. I don't mean stuff is just different, but stuff that is completely flaky. A miserable experience. Maybe the 0.8 experimental version is better, but there isn't a Windows version yet. Considering how well it handled some really tough ghosting though I am hoping that by the time it gets to version 1.0 it will be in much better shape!