Played 1.6 last night for a couple of hours (no crashing issues, seems smoother - I've finished main story @ Level 55 and 180 Hours gameplay).

While testing the Horse Combat (good fun), I noticed something odd. When I got off my horse, it started to walk off and then it was killed by a giant.

So I went to buy another horse and when I got to the Markarth stables and, lo and behold, a different horse was there that was apparently mine ("Bargain" I thought). So I got on it a rode a short distance and then got off again, and it turned around and walked straight back to the stables!

I don't want my horse to walk back home as soon as I get off it - I want it to stay where I left it for a short time at least...

Apart from that, the 1.6 patch seems OK so far.

PS I'm going to visit all the stables and kill any of "my" horses and buy a new one to see if that helps... I don't like killing horses so I may shed a tear or two in the process...

I had an unexpected horse at one of the stables too ("Arwen's horse", with that being my Altmer's name). But I didn't get on him, since I have Shadowmere, and didn't want that to change. Interesting.