Maybe you can fill us in in the history of Pro Forma Sessions. Please give Harry Reid a big fat wet kiss for me too.
As I said earlier, both of these cases are part of a conflict between the Senate and the President over appointments (and the Senate's overuse of the filibuster more generally). Comparing these sessions to Reid keeping the Senate in
pro forma sessions in 2007/2008 doesn't really work though, since a) it was an action taken by the Senate, as opposed to the House refusing to let the Senate adjourn and b) Bush's nominees would have failed on a floor vote anyway, since his party was in the minority.