DDD 3.3.11 (x86_64-pc-linux-gnu) gets `Aborted' signal

Dear DDD team, 

Trying to run ddd under ubuntu 7.10 produces the following 
output to terminal: 

pallavi@pallavi-laptop:~$ ddd 
ddd: Symbol `_XmStrings' has different size in shared object, consider 
re-linking 

GNU DDD 3.3.11 (i486-pc-linux-gnu), by Dorothea L�tkehaus and Andreas
Zeller.
Copyright � 1995-1999 Technische Universit�t Braunschweig, Germany.
Copyright � 1999-2001 Universit�t Passau, Germany.
Copyright � 2001 Universit�t des Saarlandes, Germany.
Copyright � 2001-2004 Free Software Foundation, Inc.
exec: 1: wdb: not found

Cause:  I was trying with the other options in the ddd to use.
	I dont know for which option i clicked.
	suddenly when i started ddd next time .It started to print these
messages.

Please help for using ddd.




Thanks and Regards,
Pallavi.