pdb misbehaves in emacs-21.2.1

[Yuri Shtil]

Hi

I have installed RH 8.0 and got emacs-21.2.1 with it.

I noticed that pdb (python debugging package) no longer tracks the 
source code. It displays line numbers in the debugger window instead.

It works well with emacs-21.1.1. When I moved the file gud.el to the new 
emacs and byte-recompiled it, the correct behavour appeared.

I concluded that the changes to the gud.el introduced in 21-2.1 broke 
the pdb (or maybe some other supported debuggers).

Any clues anyone ?

        Yuri.