Image won't display on PDA (CREATOR: gd-jpeg...)

Hi,

I was previously running from my home test server (Suse 9.0) but have
recently uploaded to my ISP. Since then (I think) images that have been
resized on the server (resulting in .pjpeg images) won't display on my PDA.
Instead I get garbage on screen followed by CREATOR: gd-jpeg v1.0 followed
by more garbage.

The same images are fine when viewed in IE but not on my PPC 2002 IE. I've
even tried refering to the image from a regular html page rather than PHP
but the same thing happens. Anyone know what might have changed? It almost
looks as if my PDA is failing to interpret the image as an image and is
trying to display the raw image data.

TIA,
Tino