The X-Ray machine might be to blame...
I once took a laptop through customs and the LCD screen got a strange
aura in the middle like a ghostly circle.
Also, I've had a RAM chip with one DRAM apparently not working -
although I have yet to confirm this is a fault or just an
incompatibility.
One thing's for sure, X-Ray's are the highest energy scanning out
there and they do manually check baggage if you specify you have
sensitive electronics. Otherwise it's blasted like everything else.
Was your kit in an anti-static bag with a warning sticker or
something? I don't know if it's possible to kill a chip with X-Rays
but maybe it had a rough ride on the loading truck.
You know, the APC in Aliens was a Heathrow luggage truck?
Let's rock!!!!
:-D :-D :-D :-D