[Zope] Maximum zope database size BUG on Solaris

I have Zope 2.0.0 binary distribution on a SPARC SunOS 5.7. My problem is that when the database grows up to 2gb and I try to keep adding files, Zope reports the folowing error: " Zope has encountered an error while publishing this resource. Error Type: OverflowError Error Value: integer addition " i've searched in the mailing list archives and fond that the problem may be because my operating system doesnt allow files over 2GB, but Solaris seems to allow them. Is this a Bug? Or I'm doing something wrong? If this is a limitation from my os, is there some way to suprpassit from zope? Thanks for reading!