I just got a Nexus One (Gingerbread), and when I put in my 32GB Micro SDHC it will crash when it tries to read it (copying apps, opening storage settings, etc) and after you have locked the screen it will not come back on (the menu buttons light up, but not the screen)
I re-formatted it on my computer, but when I used it in my phone it would fail again.
The card however works on my old Huawei Ideos u8150 (Froyo) with no problems.
The Nexus one reads the 8GB card that came with it fine.
I would like to know why the Nexus would do this, given that they are spec'd to read a 32GB card. And how to fix it, obviously.
I have now tried formatting it with another phone (along with formatting it with GParted) and it works until you plug it into the computer and copy files onto it. It will then either not mount it or act the same as above.