Hi,
im using zsketch for the whole design process and modelling. maybe the models are a bit heavy, i dont know. sometimes when i forget to press the optimize button zbrush crashes without any warnings (well there is an info but then its too late). “out of memory”. how to avoid something like that? there is no 64bit support or autosave 
i have lost many hours of work. im wondering if im the only one here.
i use:
AMD phenom 2 940 (@3.4ghz)
4gb ram
Windows XP 32bit sp3
greets
n.drew