Firebug returns without 'holding' last ajax call to PHP on the console

Firebug returns without 'holding' last ajax call to PHP on the console

I don't know where to ask this question. However, I would think that most Linux users would use firebug to debug.

What is happening is that client calls my php file via ajax  and the 'call' appears in the console window very briefly and then exits before I get a chance to look at it. (There are two calls. The first one remains in the console to be examined.)

Thanks for help or direction to help.

R