Susiestar - Thank you! I do feel guilty for posting too much, though... maybe it'll pass once things here calm down a bit...
InsaneCdn - I've thought of that, but I haven't yet seen any evidence of trauma. The doctors we took him to after the adoption was finalized all said that he didn't show any behavioral signs of trauma. When I asked what does he remember from his birth country, years ago, he said that his birth mother (lived with her from birth to age 4) loved him and took good care of him, and that the orphanage where he spent one year (ages 4-5) was "boring". Don't know what to make of it.
He's still not home. We've decided that if he won't come home sometime during this weekend, we'll contact a private investigator. This uncertainty is killing both of us.