OK, good to know that I'm not the only one having problems with idb. In my case the exact message is:
Unable to locate source file "/build/buildd/glibc-2.9/sysdeps/x86_64/elf/start.S"
Do you like to search for it manually?
I thought the message was related to the installer's issuing of warnings about missing dependencies on Ubuntu (9.04), but since it happens on OpenSUSE as well, it's certainly not a debian-related problem.
In my case, Synaptic lists libc6, libc6-dev, libc6-i386, libc6-dev-i386, libc6-pic and libc6-prof as installed, so I guess the glibc dependencies are satisfied ---besides, I have g++, libstdc++5, libstdc++6, lib32stdc++6, ia32-libs, sun-java6 (v. 1.6-13) and ia32-sun-java6 installed as well.
After pressing the No button on the dialog box, I can start debugging my applications, but I keep getting crashes every time, after using any evaluation window. Sometimes there's just a message at the status bar, stating that the evaluation is in progress, but besides iidb and/or java increasing their memory usage, nothing happens and I end up just killing the debugger.
If I use the p (print ) command instead of the evaluation window, there's no crash at all, so my guess is that the problem is not in the debugger itself but in eclipse/java.
I'm using IFC 11.1 now, but the same issues happened with 11.0 as well.