call to Streamer

Hi,
I have a question concerning the call to a non-autogenerated streamer when writing a class to a file (as a part of a TTree):

Is it possible that under certain circumstances the Streamer is NOT called?
The problem is that in one of our classes some action that should be done in the Streamer is already done somewhere else. Digging in our CVS I found an old comment from oct. 2001:

"...because ROOT does not always call the streamer"

So, can it still happen with the current ROOT version (>= 4.00_08) that the streamer is not called when writing an object?

Cheers

        Gero

--
-----------------------------------------------------------------------
Gero Flucke
1a / 603
DESY
Notkestr. 85
22607 Hamburg
+49-(0)40-8998-2454