I have an Executone IDS 108 KSU and voice mail system ( I believe it is VX2 Infostar ). My problem is the voice mail indicator light on some extensions are always on even thought there are no more new messages and the voice mail indicator lights of the rest extensions are always off even thought there are still some unread messages. Is it a hardware problem or a programming problem ?? This problem came out after I replaced the power supply of KSU because of lighting.