Quoting dann frazier <dannf@dannf.org>:
Transfering the pictures to an apache running i386 debian and apache 1.3.34 everything works fine, too.I'd suggest figuring out what got upgraded (/var/log/dpkg.log is a good reference) and reverting packages one by one back to the previous versions to determine which change caused the difference.
I thought about that idea, too. But how to change to the previous version without knowing which one was installed?
Philipp