Am in the dungeon beginning with D (can't remember) trying to find the staff of magnus. I kill the Skeletal dragon but he almost immediately respawns. Should I just run past him and continue the quest or is this a glitch ?

I didn't have that problem during the quest. I focused on eliminating the skeletons first before turning on the dragon. My memory is fuzzy but I think one of the skeletons was a magic user. Kill all of them first and see if stops the respawn.

Did that, he was the last to die, but still respawns. Maybe I should take an axe to him to make sure he is dead, I was using a Flame Atronach to kill him.