It's been normal, but today suddenly for some reason whenever she has her weapon drawn, she walks very slowly, while in the past she always runs around. If she sheathes her weapon then she can run around just fine, and she's not overburdened either. also when she has her weapon in her hand, she looks like she's holding a katana rather than the regular two handed weapon stance. Has anyone seen that?

also when she has her bow drawn, she's holding it like sideways like she's sneaking, but she's actually standing. this must be a bug

I actually have a question on this. I accidentally kill all of my companions, but it seems like no one else can. Is this true?

If you sheathe your weapon, your follower will too. They only draw their weapon when provoked or if the player does first.

no she's not supposed to walk slowly with her weapon drawn.

You and bosses. Anyone else ignores them when they kneel.

http://www.youtube.com/watch?v=euLhZo1aA1c
This is how you fix any problems with Lydia.

My best Lydia kill was by accident.
I was swimming and she never left the water.
I turned around and saw this distorted thing and hit it with a fireball.
Turned out to be Lydia half inside the ground mesh.
Looked like some kind of mutant mud crab.
Anyway..she fell from the sky a few seconds later.
Did a break dance on the ground and fell through agine.
Wash rinse repeat. Two more times.
I think that her slow following messes up when you enter a new exterrior cell.