Just finished 10-15 in Deadmines, including time spent summoning to DM and then summoning again to SW to get ready to run Stockades it took just shy of 55 mins (54 mins 39s when I logged). Oddly I am at 2 hours 17 minutes /played now even though my previous 2 session times = 1h 15m and 55m which should = 2h 10m total, no idea where the extra 7 mins comes from ! Might be because I alt-F4'd out, or possibly some bug with either the FuBar XP meter or with /played. Oh well.
Next up, I'll run Stockades until I hit the instance limit and see where I'm at XP wise.