I installed the professional edition of QCAD 3.0 on a fresh OpenSUSE 12.1/x86_64 system. After installing the 32bit freeglut (freeglut-32bit-100529-8.1.2.x86_64) package, the application still won't start and fails with a sefault :

/opt/qcad-3.0.0-prof-linux-x86> ./qcad
./qcad : line 38 : 5843 Segmentation fault LD_LIBRARY_PATH="$DIR" "$binary" $OPT1 $OPT2 "$@"

/opt/qcad-3.0.0-prof-linux-x86> LD_LIBRARY_PATH=. ./qcad-bin -style plastic
Segmentation fault

Here is a gdb backtrace, hoping that it may help diagnose the problem :
(gdb) bt
#0 0x09af5d81 in ?? ()
#1 0xf4b2ddbf in FT_Has_PS_Glyph_Names () from /usr/lib/libfreetype.so.6
#2 0xf4babe44 in ?? () from /usr/lib/libfontconfig.so.1
#3 0xf4bac91e in FcFreeTypeCharSetAndSpacing () from /usr/lib/libfontconfig.so.1
#4 0xf4badf53 in FcFreeTypeQueryFace () from /usr/lib/libfontconfig.so.1
#5 0xf4bae654 in FcFreeTypeQuery () from /usr/lib/libfontconfig.so.1
#6 0xf4ba9509 in ?? () from /usr/lib/libfontconfig.so.1
#7 0xf4ba987d in ?? () from /usr/lib/libfontconfig.so.1
#8 0xf4ba9a57 in ?? () from /usr/lib/libfontconfig.so.1
#9 0xf4ba59d1 in ?? () from /usr/lib/libfontconfig.so.1
#10 0xf4ba5c86 in FcConfigBuildFonts () from /usr/lib/libfontconfig.so.1
#11 0xf4baebac in FcInitLoadConfigAndFonts () from /usr/lib/libfontconfig.so.1
#12 0xf4baee1d in FcInit () from /usr/lib/libfontconfig.so.1
#13 0xf53537e1 in qt_init(QApplicationPrivate*, int, _XDisplay*, unsigned long, unsigned long) ()

 from ./libQtGui.so.4

#14 0xf52d5db8 in QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) ()

 from ./libQtGui.so.4

#15 0xf52d649a in QApplication::QApplication(int&, char**, bool, int) () from ./libQtGui.so.4
#16 0x08b59746 in ?? ()
#17 0x08171cd6 in ?? ()
#18 0xf4bf6003 in __libc_start_main () from /lib/libc.so.6
#19 0x08171701 in ?? ()
Backtrace stopped: Not enough registers or memory available to unwind further

libfreetype installed version is libfreetype6-32bit-2.4.7-6.1.x86_64

Mesa-32bit
libgthread-2_0-0-32bit
libgobject-2_0-0-32bit