Problem with gud-gdb on emacs

Hi,

     I am using gdb with gud on emacs to debug a problem(ie using M-x gdb). 
When I set a break point and run the program , I  don't  see  the file 
opening in a different buffer. Instead I get weird C-z s. Can anyone tell me 
, whats happening ? Pasting log below...

Thanks,
dharmadeep


---------------------------------------Log 
Here------------------------------------------------------------------------------
GNU gdb Red Hat Linux (5.3post-0.20021129.18rh)
Copyright 2003 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux-gnu"...
(gdb) break main
Breakpoint 1 at 0x804b041: file src/main.c, line 416.
(gdb) run
Starting program: /home/temp/temp.linux
[New Thread 1074147968 (LWP 15007)]
[Switching to Thread 1074147968 (LWP 15007)]

Breakpoint 1, main (argc=1, argv=0xbfffefe4) at src/main.c:416
^Z^Z/home/temp/src/main.c:416:10540:beg:0x804b041
(gdb)

----------------------------------------ends 
here-------------------------------------------------------------------------------------

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