Not sure what "autotest" is. There had been a problem in that if you called Debugger.debugger we weren't reading the .rdebugrc. In the current SVN sources though I believe this is fixed. If not let me know (and let me know what is meant by "autotest".
When I run tests with the "rdebug" command, it reads my rdebugrc configuration. When I run an "autotest", it doesn't appear to read the configuration file. Is there something else I need to do?