Updated the source and deb files. Now files should be saved as expected, also added a few icons.
In the first versions of the provided Ubuntu deb files, I forgot to add 'libqt4-sql-sqlite' as a dependency. As a consequence, the address book doesn't work. The updated files should work now.
This is the first release of a little program called 'QLeTTeX'. The idea for it came a few months back when I thought there should be a way to automate writing letters using LaTeX, especially to make it more convenient, i.e., without having to copy an existing letter source file and start from there.
This is the result so far, for me it works pretty nicely. I also wanted to get deeper into Qt programming, so it was also kind of a study project for me. I hope this is useful for others as well.