We have recently upgraded a 406V2 IPO 3.1.56 system to IPO 3.2.17 and have experienced a number of problems. The most difficult to work around concerns the operation of park keys under PM Pro. On some PCs a park key does not cause the caller's CLID to be shown on the parked tab and the call will not park. However the F9 key operates correctly. Other PCs operate PM Pro correctly and prior to 3.2.17 they all operated correctly.