I have just setup my new WAG325N and I am having trouble with WPA security with my Windows Mobile devices. I have security mode set to WPA-Personal with a 12 character PSK. Encryption mode is set to 'TKIP or AES' which is the only option. My HP iPAQ rx1950 which is a Windows Mobile 5 device only has WEP or TKIP encryption modes. But with this set to TKIP it will not connect successfully - the status remains on connecting and it keeps retrying (see attached router log for an example attempt). If I disable security the device connects with no problem. My O2 Xda Orbit which is a Windows Mobile 6 device can use either TKIP or AES. If I select TKIP then once again it will not connect and I see the same behaviour. However if it select AES then it connects fine. My two other wireless PCs can connect OK no matter if they use TKIP or AES. So it just seems to be TKIP compatibility with mobile devices that is the problem. The WAG325N is running the latest firmware V1.00.11. There are no updates/upgrades available for the rx1950. My previous gateway was a WAG354G and with this all my devices connected using WPA with no problems. Any ideas of a solution that doesn't result in lower security?