libqt-mt.so and xinerama: undefined references

[Jason Winzenried <myPublicListAddress@bresnan.net>]

recently upgraded to kde 3.4.2 from unstable, most everything works well.

I am however unable to compile anything.  apt-get source, /debian/rules build 
always tells me that qt is not installed (same result with ./configure).  
Poking through config.log, I am getting
/usr/share/qt3/lib/libqt-mt.so: undefined reference to `XineramaIsActive'
/usr/share/qt3/lib/libqt-mt.so: undefined reference to `XineramaQueryScreens'
/usr/share/qt3/lib/libqt-mt.so: undefined reference to 
`XineramaQueryExtension'

With some apps I can kludge around it by replacing '-lXext' with '-lXext 
-lXinerama' in configure, but it doesn't always work, and sometimes when it 
does compile, when I run the resulting binary it gives me
symbol lookup error: /usr/lib/libqt-mt.so.3: undefined symbol: 
XineramaQueryExtension

Some random outputs that may or may not be useful:

nm --dynamic /usr/lib/libqt-mt.so|grep -i Xiner
         U XineramaIsActive
         U XineramaQueryExtension
         U XineramaQueryScreens

nm /usr/X11R6/lib/libXinerama.a | grep XineramaQueryExtension
Xinerama.o:
00000630 T XineramaIsActive
00000610 T XineramaQueryExtension
00000740 T XineramaQueryScreens
00000620 T XineramaQueryVersion

readelf -a /usr/lib/libqt-mt.so.3.3.4 | grep Xinerama
 0x00000001 (NEEDED)                     Shared library: [libXinerama.so.1]
006923e4  001bdf07 R_386_JUMP_SLOT   00000000   XineramaIsActive
00692404  001bf307 R_386_JUMP_SLOT   00000000   XineramaQueryScreens
006954fc  003b0507 R_386_JUMP_SLOT   00000000   XineramaQueryExtension
  7135: 00000000   276 FUNC    GLOBAL DEFAULT  UND XineramaIsActive
  7155: 00000000   552 FUNC    GLOBAL DEFAULT  UND XineramaQueryScreens
 15109: 00000000    41 FUNC    GLOBAL DEFAULT  UND XineramaQueryExtension

readelf -a  /usr/X11R6/lib/libXinerama.so.1 | grep Xinerama
 0x0000000e (SONAME)                     Library soname: [libXinerama.so.1]
    15: 00001070   276 FUNC    GLOBAL DEFAULT   10 XineramaIsActive
    17: 00001190   552 FUNC    GLOBAL DEFAULT   10 XineramaQueryScreens
    19: 00001040    41 FUNC    GLOBAL DEFAULT   10 XineramaQueryVersion
    28: 00001010    41 FUNC    GLOBAL DEFAULT   10 XineramaQueryExtension

ldd /usr/lib/libqt-mt.so.3
...
libXinerama.so.1 => /usr/X11R6/lib/libXinerama.so.1 (0xb76a1000)
...

I'm at a bit of a loss, and feeling lost without being able to compile 
Konqueror, okle, etc without my usual changes.  I'd file a bug, but I suspect 
it's something specific to my machine, or surely someone else would have 
noticed something like this by now?  At any rate, any hints would be greatly 
appreciated here.  

Using mostly Etch, with a lot of C++ stuff from Sid.  Trying to compile with 
gcc4 of course.  

-Jason