I have just installed MMA-11 on my MacBook and the very first reactions I have, on a most trivial level, are these (and I cannot resolve them myself obviously):

[1] The dock icon has changed from a cool(-ish) spiky sphere to a Simpsons like starburst - yuk.

[2] Typing zero - 0 - in a notebook puts a centre dotted zero on the page - where did this come from?

I am looking forward to exploiting many of the new mathematics functionality but if anyone can help me clear up these early interface issues, I will be so grateful.

Best Wishes,

David