I noticed that my sovereign, who I cast regeneration on at the beginning of the game, was regenerating only 1hp per action. Now that I have 4 life shards it should be 5. I dispelled it and recast it and now it is 5hp per turn. I'm not sure whether this is happening to other spells or not.
here is my game: https://dl.dropbox.com/u/82215619/QuickSave.EleSav