just tried to play resident evil, having not surpassed my previous score, after about the tenth game, instead of showing the leader board when the game was over a message was shown that the score could not be saved. i then had to log out then log back in for access to the game and leader board.
it appears there is a bug on the arcade board where if an account is logged into certain games (pacman as well) without activity elsewhere on the board or games that the connection is reset and no progress is counted.