I allready posted this problem a time ago:
10.3.3 is working great, except for the USB and digicam problem...
It is a fact, that with a G5 and 10.3.3 images from a digital camera are getting corrupted when importing them.
It does't matter if one uses iPhoto or another way to import the photo's
The problem doesn't seem to exist with 10.2.8 or 10.3.x other than 10.3.3
The problem does't exist with my girlfriends older iMac (G3 600 MHz - 15" CRT)
I don't know if other macs have the same problem, it would be interesting to find out.
I also find out it doesnt matter what kind of camera is being used. I tried a Canon G5, a Canon 300D and a Nikon D70, all having the same problems.
I really hope Apple is going to release 10.3.4 soon with a fix to this problem!!!