Legal Commentary

When I attended law school, all the four-hour courses were taught in two separate two-hour blocks.  At UC Davis, we primarily teach four-hour courses in four one-hour classes, although we can request longer classes.  Do any professors have thoughts on whether two two-hour classes are pedagogically different/better than four one-hour classes?  I'd also be interested in hearing from any students out there - do you prefer multiple class hours in a row, or is better to spread it out?