We use PTK as an intranet for a R&D company. Users publish their reports as in PDF format using portal file object type. Now and then (enough to be irritating, but not reproducable on demand) the PDF file gets corrupted in the download, resulting in the reader complaining (typically "file does not start with %PDF...") The server runs linux (mandrake 7), Zserver2.1.6, Zope 2.1.6 and PTK 0.7.1 The clients are heterogenous, IE5, Netscape 4.x on both PC and workstations. Anybody a clue what can cause this? -- Lucas Hofman PGS Seres tel: +47 67514059 PO Box 354 fax: +47 67526640 N-1324 Lysaker, Norway