[Zope] Zope 2.7 core file - leak?

Using Zope 2.7 under Plone 2.0.2 on Solaris One of our developers noticed a problem with Zope leak ­ see below - has anyone else noticed this? Is this patched with newest version Zope 2.7.2 -------- I noticed that since zope 2.7.x (which is different from 2.6 architecture). It is always got crushed without notification. For example, when I click a folder, in the folder, if I click the head to sort the files by date. A "core" file will be created in the zope server's bin directory and the zope server is crushed. Is this a bug in 2.7.x? Do you know that is anyway that I can read this "core" file (it is in binary format). --------- Thanks -Bill