I have a TKXTD-816 with caller ID which worked fine for some time. I called the phone ccompany and had caller ID feature removed and some time later called and had caller ID added again to my phone line. Now the caller ID doesnt display correctly on my sets (frequently show the previous call, not the current call or only shows 1/2 of the displayed name). I dont have any numbers/names entered into the directory. I call panisonic and asked for a new ROM several times (even paid to have it shipped to me) and each time then sent ROM chips for the wrong system. I am running PO51I50130A. Was told there was a newer version but every time they send it to me the part number comes up for a diffent PBX (on their site). If I put them in my system wont even boot up. (I was hoping a new ROM would support what I suspected was a new caller ID format?) Anyone else ever hear of the caller ID messingup? I have reset/cleared my system and completely re-entered all of my settings with the same results. Otherwise the system works flawlessly.