Typing "bash" at the command line spawns two bash processes

Server: IBM p770
OS: AIX 6.1 TL5 SP1

When one of our develoeprs types "bash" on the command line to switch shells, it hangs. For some reason, two bash processes are created....the first bash process spawns a second bash process in the same console, causing a hang. Anyone have any idea what would cause something like this? It works on other identical servers, and works for other users on the same box. I checked .profile, env, and aliases for a clue, but came up empty. I also copied the bash file to another location and ran it using the full path--same problem. It appears to be something with the user's setup, not the file itself, but I haven't any idea what.

Thanks for any ideas.

Check .bashrc in the developers login directory as well. (it also may be in other directories)

Thanks for the suggestion, Jim, but the .bashrc file doesn't exist anywhere on the system.