A friend of mine on 10.2.8 and QXP6 has the same problem. He thought something was wrong with his printer, but it's actually that Quark isn't showing the font size/position properly. It shows the font at 100% h/v instead of whatever it was changed to, which is why the baseline appears to shift. It is definitely frustrating... He hasn't found any solution yet. I haven't noticed it myself, but I never change the h/v scale. Perhaps it'll be fixed in the Quark update. I've heard an early Feb release from a Quark tech but we'll see...
Another problem we have encountered, running the same system:
Certain fonts, and I haven't had the chance to identify any similarities, when enlarged to, say 190pt, the baseline gets all squiggly. When my friend first showed me, I thought he had done it on purpose. I haven't tried printing it, but I imagine it prints correctly like in Doogz's case with the h/v scale.
Any ideas??