Free .... almost.
So they're working out the issues on the X11 version of Qt. Good. What about Windows? Just because the OS isn't free doesn't mean the software can't be free. I write (free) software that I'd love to run on both X and Windows. I initially started using Qt but was turned away when I saw the (then, I haven't checked recently) $1200 price tag for the Windows version. That wasn't even the thing that made me switch though. In a thread on the Qt mailing list about that very issue, one of the developers (I forget who) said that if you don't like it, use something else. Well, now I do. wxWindows is what I use now, and it is an outstanding product. Ah well, another "could be usable if only..." piece of software to add to the heap.
(Note: I only disagree with the license for Windows, I still believe Qt is a quality piece of software, I will give them that, I just wouldn't use it.)