Well I never knew about the GUI for GDB. My sir who posted a comment on my last GDB article asked me whether it comes with GUI ? and I googled it and here we go it is having GUI also. Well for all those who don't want to use the command line GDB this is a good news. Here i,m giving a few screen shots of it and also a link where you can get GDB GUI
http://sources.redhat.com/insight/
This was actually developed by people working in Red Hat Inc. and Cygnus Solutions. In the link given above you can find all about GDB GUI

Here is one screen shot i got from the link above