vicki mabry has this report in tonight's "realty check". >> well, we are seeing a turn around. the beginning of what might be a turn around. >> the fact that this man robert shiller is cautiously bullish today is quite something. everyone that the housing market was bad news and predictedcocre closely watched case shiller price index. >> we have seen prices go up, now two months in a row. nationally. home prices have been falling for almost three years before that. e.rarka>>>>rbl it may not be enough to say the housing bust is turning into a boom. but for the second month in a row, home prices rose in 18 of the nation's 20 largest cities. what do you think accounts for the fact that they're going up for the first time in three years? >> well, i think it's the general recovery of confidence. the stock markets of the world are going up as well. and we have a president that has a new plan, which was announced in february. so we started to think more positively. >> the two stubborn bleak spots are economicalldepressed detroit and overbuilt las vegas. but on the bright side, seven c