I travel way to much and I've only ever had one problem when I left all my gear in the pelican case and the customs officer got a tad shirty about it.
After asking me to open the case he then proceeded to grab the camera and that was a huge mistake on both our parts
What I do with the camera gear now is empty my pelican case at the xray machine and put all parts into one of those wonderful tubs, that way only I touch the equipment and all is safe.
The xray machine wont hurt your digital camera, but the customs ppl can. If they need to rerun it through remember you have the right to tell them you will carry it back around.