Comment 2 for bug 505324

$ apt-cache depends saods9
saods9
  Depends: libtk-img
  Depends: libtktable2.9
  Depends: tcllib
  Depends: blt
  Depends: libc6
  Depends: libgcc1
  Depends: libgfortran3
  Depends: libstdc++6
  Depends: libx11-6
  Depends: tcl8.4
  Depends: tk8.4
  Depends: zlib1g

$ ldd /usr/bin/ds9
 linux-gate.so.1 => (0x00777000)
 /usr/lib/Tktable2.9/libTktable2.9.so (0x001a4000)
 libz.so.1 => /lib/libz.so.1 (0x00823000)
 libBLT.2.4.so.8.5 => /usr/lib/libBLT.2.4.so.8.5 (0x001c7000)
 libtk8.4.so.0 => /usr/lib/libtk8.4.so.0 (0x00acc000)
 libtcl8.4.so.0 => /usr/lib/libtcl8.4.so.0 (0x0058e000)
 libgfortran.so.3 => /usr/lib/libgfortran.so.3 (0x00c3b000)
 libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00d68000)
 libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0x0089f000)
 libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00d18000)
 libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0x002ba000)
 libX11.so.6 => /usr/lib/libX11.so.6 (0x008d8000)
 libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0x00110000)
 libtk8.5.so.0 => not found
 libtcl8.5.so.0 => not found
 libnsl.so.1 => /lib/tls/i686/cmov/libnsl.so.1 (0x00129000)
 libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0x00140000)
 /lib/ld-linux.so.2 (0x00161000)
 libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00795000)
 libXau.so.6 => /usr/lib/libXau.so.6 (0x00144000)
 libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00148000)

So there seems to be a problem between the linking of /usr/bin/ds9 and the saods9 package information.