I configured KStars to the geographical coordinates of Curitiba, Parana, Brazil, and yet the moon during the growing phase, appears as an inverted C, as if I was in the northern hemisphere. It's a bug?
KStars 1.6.0
KDE 4.4.4 release 3
OpenSUSE 11.3

This is probably a bug. Please file a bug report at bugs.kde.org

I was doing some checking (KStars 1.6 on KDE 4.5.4 on PCLinuxOS), setting the date to Jan 10, 2010 (a recent date when the moon was a crescent and growing), and setting the geographic location to a location in Brazil. The crescent of the moon points towards the sun as it should.

I'm not sure what is meant by "appears as an inverted C, as if I was in the northern hemisphere". that's probably a matter of perspective/orientation - people in the southern hemisphere may be more accustomed to having the southern pole at the top (I can't be sure though; what time I've spent in Brazil was mostly around the equator where both poles appear near the horizon, so a person might not be partial to one or the other). Therefore the problem may be rooted in the fact that you can't reorient the sky such that the southern pole is in the top of the sky, as we in the northern hemisphere are used to having the northern pole.