[paxmark1]

Xubuntu sounds perfect for you. The main item is what version of QT are you running. You can find that in synaptic. 5 is best, Sigil devs(s) jumped onto the brand spanking new version of QT. I would be very surprised if Xub13.10 does not have QT5.

NOTE: it you use DiapDealers binaries, the QT is already inside and you do not have to even consider what version of QT you are running.

I predict a bit more spritely machine with Xubuntu. Especially if you have over a Gigabyte of memory.

If you do have the dough, a refurbed Windows7 box is nice, tax software, etc, software. I turn on my Win7 at least once a week. It is the only Windows I really like. I would not be surprised however if you come to like the minimal elegance of Xubuntu. If you have a terabyte of hard disk space on a refurbed computer, it would be quite simple to add an Xubuntu section on, and the "newer" hardware would have a much faster chip and more memory.