How to debug ogle?

I'm trying to run ogle through the debugger, or possibly attach to the 
process after starting it the usual way, in order to find out why it 
hangs when playing one of my films... I have

$ file /usr/lib/ogle/ogle_nav
/usr/lib/ogle/ogle_nav: ELF 32-bit LSB executable, Intel 80386, version 
1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), 
not stripped

- notice the "not stripped" (yeah, I've *installed* an unstripped 
version to debug. I thought it would be easier that way as I wasn't sure 
if the scripts would pick up the right versions when running from the 
source dir.) - and as far as I can tell, everything is compiled with 
'-g', but I still get:

$ gdb /usr/lib/ogle/ogle_nav
GNU gdb Red Hat Linux (5.3post-0.20021129.18rh)
[ ... ]
(no debugging symbols found)...

What am I missing?