gdb in Emacs 23

[mwnn]

Hi,
   I am using Emacs 23 (from CVS). In a GDB session we normally type 
one of the GDB commands (e.g. n, s, ...) and then just type the return 
key so that the previous command is executed. But in Emacs 23 the return 
key does not do that. The user has to explicitly type the GDB command 
all the times. Is there a work around for this issue.

Regards.
chandan