Australia refused to check in at Sunday's official opening, setting off public complaints by a dozen other teams.

In what appears to be a new Olympic social media tradition, the hashtag #RioProblems is already filled with reports of problematic conditions in Rio.

Australia's Olympic team leader is keeping the delegation's 700 athletes or staff out of the Athletes Village for at least two days, citing electrical and plumbing problems in the sprawling complex less than two weeks before the start of the games in Rio de Janeiro.