I'm posting this here rather than the imagecache queue, because it appears to be more of an Apache issue than a problem with imagecache. Lots of hair pulling boiled down to this:<div><br></div><div>1. If a request is made for an image that exists in the imagecache directory, it is served up</div>
<div>2. If a request is made for an image that is Not in the directory (i.e. default/files/myfile.jpg, the request being default/files/imagecache/100x27/myfile.jpg), Apache returns a 500 error</div><div>3. The 500 error is returned WITHOUT hitting index.php</div>
<div>4. default/files has the correct ownership and, for now, 777 permissions</div>