Yes but my notes have become more and more sparse over the years. For a dungeon game it's bullet points about what's in the room and a note about anything that might be foreshadowing something later so I don't forget about the linkage. For more character-oriented games its bullet point lists of what the bad guy's plot is, names and short descriptions of NPCs and their involvement in the plot, lists of locations and who is there, etc. Along with a review of the cyrptic notes I wrote to myself during the previous session so I know where to pick up.