I'm not quite sure if this is already reported or not, so I won't give much information on it (I've looked for something similar, but I haven't found it). I'm runnig Zope 2.2.0 under Linux. I have this product I've made myself - called TravelAgent. I add an instance of it to the Zope root-folder, which I call TravelAgent. Everything works fine. If I rename this instance to something that has less than five characters in it, something very fish starts to happen. I should also mention that in the index_html method's body-tag I have an background-element which displays somepic.gif. Now, if the instance is called f ex Trav (ie. less that five characters) and I try to render the index_html, it displays the background image correctly, but it also pukes out the gif in ASCII on top - and nothing else. This happens very consistently, unless I reload fast four, five times - then it display the whole index_html just fine. I rename back to Trave (ie. five characters or more) and everything is fine. I can reproduce this all the time. Strange, huh?