Another thing I thougth about.
Instead of being able to scroll sideways, I suggest that if you mark a folder or a file that are wider then the column should start scroll the name to the left and by that show you the full name. most of the time you know your folders and files even thou you cant see the whole name. But as it is now I find it a little clumsy to scroll.

I hope my sugesstions can help you bring the maemo users around the world an nice looking ftp client.