ACM 8720 and 2420 Handsets Button Labels scrambling

[Cobr8]

Has anyone had this problem before on the 8720, if you add a busy indicator key to a 2420 handset and then the user edit the label after about 30 mins thelabel has changed i.e. characters have been added and mixed up. Please help no one seems to have heard of this before and have had it on 2 sites now.

 

[Midstream]

Status the individual sets that are displaying the characters improperly. Then compare the firmware level of those sets against the most current release available. I think we're at 4 these days. A firmware upgrade may be your solution.

 

[Cobr8]

THanks very much for that, but i have already checked that and all the handsets are already at firmware 4..this is a new install that went live last weekend...Thanks again Crane/Avaya havent come back with anything as yet !!
I will let you know any/if i find the soloution.