Created an attachment (id=5598)
Log produced trying to save e qcad drawing
The problem has been verified on revision 50273-rel running into Vbox 3.2.12 hosted by Ubuntu 10.10 64bit.
Qcad installs and runs without any kind of errors, no graphic problems (bottons, icons,...) and it seems to works greatly for some common basic functions (lines, figures,...).
It freezes trying to save a drawing.