Hi! I've build a website with zope where users can upload PDF-files via a simple webform. (multipart/form-data) After sending the PDF Zope will save the received data in a LocalFS directory. This works just fine. But I discovered a big problem: I uploaded a big PDF file (10Mb). When I look at the Physical Memory load during the upload I see how zope is using more and more memory. After the upload the Physical memory load is about 15 Mb higher as before the upload. Then I see how zope releases the memory when it finished the write-action. But the memory load BEFORE the upload is much lower than AFTER the upload. Somewhere is a memory leak. But where??? My server with 2Gb memory is now out of memory.... When I stop and start zope again the memory load is normal again... Does anybody knows what is happening here? THANX for your Help!!! Marco Mans.