Just to ckeck if someone is having the same problems. We already deployed a big quantity of 7941G/7961G with phone load 8.0(3). Sometimes users are complaining that the line buttons stop working.. That they hit the button and nothing is happening..
Also sometimes when they received a call and they hit answer it get stuck there.. And also that sometimes when they put a user on hold and later on hit resume the phone get stuck there as well.. Resetting the phones seems to fix the problem....
They also have 7912 and old 7940/60 and the problems is not happening on those phones.. Seems to be with the newer phones..