I don't know if you're still wanting reports, but I'll give you mine anyway
Irritatingly, I couldn't use wget with the link you provided, so had to download with my browser and then scp to the machine I wanted it on. That appears to be a Google Docs thing, so not really something you can influence I guess.
Installed and ran without any problems, on Lubuntu 13.04 (Raring). This is a pretty new install, only a week or so old. I have a bunch of QT4 libraries, but no QT5.
I was running it via X forwarded over SSH. Worked fine, no problems, though I did get the following messages.
Code:
russ@Chapterhouse:~$ sigil
Gtk-Message: Failed to load module "pk-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
libGL error: failed to load driver: nouveau
libGL error: Try again with LIBGL_DEBUG=verbose for more details.
I'm fairly certain I've seen the same messages when running other programs via X over SSH, and not had problems, so I'm not concerned, just thought the information might be useful.