Dear Woman on the other side of the wall from me:
Okay, yes someone took your chair. Yes. I know. I have heard you tell the story to at least 6 people, including your manager, in the past 20 minutes. Now, did you buy this chair? Nope. It was provided for you. The new chair does not feel the same? Okay.
But you will not keep talking about this chair for the next 8 hours. Build a bridge or in your case a new chair and get over it.
I know I did not just hear you ask if you could lock the new chair up every night!?!?!?!!?!?!?!?!?!?
The things folks get worked up about. I bet your manager wishes you were this passionate about your job!