Gave it a try but no cigar:
root:# ln -s libgdk_pixbuf_xlib-2.0.so libgdk_pixbuf_xlib-2.0.so.0
/opt/acroread/Reader9/Reader/intellinux/bin/acroread: error while loading shared libraries: libgdk_pixbuf_xlib-2.0.so.0: cannot open shared object file: No such file or directory
I installed acroread on my system, and it works. I checked the status of both libgdk_pixbuf_xlib-2.0.so and libgdk_pixbuf_xlib-2.0.so.0 on my system, and they seem to link to a file called libgdk_pixbuf_xlib-2.0.so.0.2400.1. So, maybe for acroread version 9.3.4-i586-1vl70, the following would work:
ln -s libgdk_pixbuf_xlib-2.0.so.0.2400.1 libgdk_pixbuf_xlib-2.0.so.0
ln -s libgdk_pixbuf_xlib-2.0.so.0.2400.1 libgdk_pixbuf_xlib-2.0.so
Before doing this, though, might be best to run "updatedb" and then search and see if in fact the file "libgdk_pixbuf_xlib-2.0.so.0.2400.1" exists on your system. These files on my system are all linked as such:
root:# ls -l libgdk_pixbuf_xlib-2.0.so
lrwxrwxrwx 1 root root 34 Aug 9 14:00 libgdk_pixbuf_xlib-2.0.so -> libgdk_pixbuf_xlib-2.0.so.0.2400.1*
root:# ls -l libgdk_pixbuf_xlib-2.0.so.0
lrwxrwxrwx 1 root root 34 Aug 9 14:00 libgdk_pixbuf_xlib-2.0.so.0 -> libgdk_pixbuf_xlib-2.0.so.0.2400.1*
root:# ls -l libgdk_pixbuf_xlib-2.0.so.0.2400.1
-rwxr-xr-x 1 root root 59648 Jun 21 03:59 libgdk_pixbuf_xlib-2.0.so.0.2400.1*
I'm not sure why there's an asterisk beside the name of the libgdk_pixbuf_xlib-2.0.so.0.2400.1 file, but this one seems to be the only one that is an actual file of the three, rather than a link.
Anyway, good luck getting it to work.