I play an MU so I tend to take a thief along (although I change this depending on what is happening.
On some occasions my thief has noted that there is a trap on the floor but I have accidently pressed another button or something and the thief doesn't automatically go over and fix the trap. Is there a way of me asking the thief to go and fix the trap?

to save me looking this up... is there a quick button to save like there was in BGII?

Quicksave is 'G'

Sometimes you can get Tomi to disable the trap by leaveing end reentering the room.