error while loading shared libraries: libgthread-2.0.so.0

[lsmod]

When i try to download and use unetbootin-linux-49x from sourceforge, i always get:
unetbootin-linux-494: error while loading shared libraries: libgthread-2.0.so.0: cannot open shared object file: No such
file or directory

But the library exists
$ ls -l /usr/lib/libgthread-2.0.so.0
lrwxrwxrwx 1 root root 26 6. Dez 00:03 /usr/lib/libgthread-2.0.so.0 -> libgthread-2.0.so.0.2400.2

ldd also says everything is fine:

$ ldd /usr/bin/unetbootin
        linux-vdso.so.1 => (0x00007fff479ff000)
        libQtGui.so.4 => /usr/lib/libQtGui.so.4 (0x00007ff70bcfd000)
        libQtNetwork.so.4 => /usr/lib/libQtNetwork.so.4 (0x00007ff70b9c8000)
        libQtCore.so.4 => /usr/lib/libQtCore.so.4 (0x00007ff70b536000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x00007ff70b31a000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007ff70b006000)
        libm.so.6 => /lib/libm.so.6 (0x00007ff70ad83000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007ff70ab6d000)
        libc.so.6 => /lib/libc.so.6 (0x00007ff70a80c000)
        libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007ff70a5d6000)
        libaudio.so.2 => /usr/lib/libaudio.so.2 (0x00007ff70a3bd000)
        libglib-2.0.so.0 => /lib/libglib-2.0.so.0 (0x00007ff70a0e1000)
        libpng12.so.0 => /lib/libpng12.so.0 (0x00007ff709eba000)
        libz.so.1 => /usr/lib/libz.so.1 (0x00007ff709ca3000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007ff709a1b000)
        libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x00007ff7097d3000)
        libSM.so.6 => /usr/lib/libSM.so.6 (0x00007ff7095cb000)
        libICE.so.6 => /usr/lib/libICE.so.6 (0x00007ff7093b0000)
        libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00007ff7091a5000)
        libXext.so.6 => /usr/lib/libXext.so.6 (0x00007ff708f93000)
        libX11.so.6 => /usr/lib/libX11.so.6 (0x00007ff708c58000)
        libdl.so.2 => /lib/libdl.so.2 (0x00007ff708a53000)
        libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x00007ff70884f000)
        librt.so.1 => /lib/librt.so.1 (0x00007ff708647000)
        /lib64/ld-linux-x86-64.so.2 (0x00007ff70c9f6000)
        libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007ff70841e000)
        libXt.so.6 => /usr/lib/libXt.so.6 (0x00007ff7081ba000)
        libXau.so.6 => /usr/lib/libXau.so.6 (0x00007ff707fb7000)
        libpcre.so.3 => /lib/libpcre.so.3 (0x00007ff707d86000)
        libuuid.so.1 => /lib/libuuid.so.1 (0x00007ff707b82000)
        libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007ff707965000)
        libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007ff707760000)

Please refer also to the bug-report at Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=607514

[Geza Kovacs (gezakovacs)]

You're running a 64-bit OS, but the binary on the website is 32-bit. Try installing ia32-libs.

[lsmod (forum+sf)]

The ia32-libs are installed.
I am running Debian Testing (Squeeze).

# dpkg -l | grep ia32-libs
ii ia32-libs 20101129 ia32 shared libraries for use on amd64 and ia64 systems

I really cannot understand this error.

# file /usr/lib/libgthread-2.0.so.0
/usr/lib/libgthread-2.0.so.0: symbolic link to `libgthread-2.0.so.0.2400.2'

# file /usr/lib/libgthread-2.0.so.0.2400.2
/usr/lib/libgthread-2.0.so.0.2400.2: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped

Any other ideas?

[lsmod (forum+sf)]

I have an idea now.
The corresponding 32-Bit libs are missing!

http://packages.debian.org/search?searchon=contents&keywords=libgthread&mode=filename&suite=testing&arch=any

I installed the package ia32-libs-gtk now.
It works now!

This bug can be closed.
Thank you!