[fw-mvc] Zend_Db_Profiler_Firebug with large number of request

Hi,

I have a application under production since 18 months. I always follow ZF evolution so this application run now with 1.6RC2 (yes RC2).
I don't want to disturb anything and I want to see my database requests so I decide to use Zend_Db_Profiler_Firebug.
For most of my page, there is no problem (10 database request) but one page need 200 request and I have a exception in Firebug.
See the image:

Is it due to a too big header? A too big JSON string for Firebug?

Mickael.