[Zope] Python instance growing while ZTC

Hi all. Apologies in advance if my question has a somewhat obvious answer. I'm working on a Zope application, developed as a python product. I've ZTC in place for this application. While I run all the ZTC, I can see python process size growing. Can I use this as an indication of a leak of resources in my application? Thanks in advance for your attention. Regards Marco -- Marco Bizzarri http://iliveinpisa.blogspot.com/