I am also experiencing the following problems after upgrading from 2.3.1 to 2.3.2:
I can not edit any posts.
I can not write posts (it just goes to a blank page with the menu and the footer)
I am using K2 and it seems to break the K2 sidebars — I was able to fix it with the Disable WordPress Widgets plugin.
Anyone know of fixes or workarounds to at least write posts or edit them?
WAIT, THIS JUST IN: I solved my problems by getting rid of 2.3.2 – I found that I still had a copy of my 2.3.1 site. I overwrote 2.3.2 and all is happy in the world!