Yurop, opinion or fact? Your post is so full of supposition that it cannot be taken seriously. BTW, when entering almost any country there is a chance that they wuill ask to look through your computer, as until you have entered you are generally not protected by that countries laws.

"I've heard from several colleagues from first and second hand that they had their notebooks inspected "very carefully" by US immigration"

FUnny I know of no one this has happened to, in any case, were they trying to ascertain whether it was bought abroad? Were their hard drives inspected? Thought not.