I'm fine with the default FOV but it lowers all by itself for some reason. The default is pretty low already so when it goes lower it's a real head-trip. Luckily opening the console and just typing "FOV" puts it back to default, but I shouldn't have to do that.

Anyone else have this issue?

Go into the settings ini file and edit/add the line

fDefaultWorldFOV=

with your fov # following it. It will stop it from resetting.

From this forum post:

http://www.gamesas.com/index.php?/topic/1263961-how-can-i-permanently-change-the-fov/page__p__19212680#entry19212680