as an update to my previous post: my players are now halfway into level 3.
the group came out of their rolling slump in the most awesome way possible. they were getting quite destroyed in a level 5 end-of-adventure encounter (made for 5 characters, they were missing the wizard so they had 4 characters) until my houseruling of 'you can use all your action points on one turn if you want' came into play. the barbarian who was dying rolled a 20 to wake up, killed the guy who he had taken him out, charged the next target (swift charge), killed it, used an action point to attack the controller next to him, dealt loads of damage, used another action point and used avalanche strike to utterly decimate the target, ending combat.
these moments are what legendary stories are made of. i am so happy i recently started playing d&d, and im happy that my houseruling actually turned into something awesome!