Hi,
Is this normal !!!!???
Open a new drawing and save-it,
this will be around 25ko file size.
If you make qsave many times (50 approx)
without drawing anything and without zooming...
just qsave.
and than take a look of your AutoCAD drawing size.
this will be more than 25ko.....
WHY 
also, we can not purge and/or audit....
so if you are in a existing BIG drawing and make a simple
Wblock containing 2 lines.....take a look of this Wblock file size....
IS THIS NORMAL 
Any information about this will be appreciated.
thanks.