Hi - I've got a TyTN II, upgraded to the SEA Windows mobile 6.1 ROM upgrade and I'm having issues connecting via WiFI.

At home is a dialup connection, hooked up through a bog standard D-Link router - passphrase enabled, nothing special.  My phone will connect to it and allow me to sync to the exchange server without a problem.

However, at work (with the same WIFI that I connect my laptop to - no MAC address filtering) the device claims error 0x80072EFD and won't sync exchange or open web pages.

Now, I'm trying to tether to the notebook (Mac OS 10.5.7, WEP key) etc., just so I can sync via the network here (rather than access through the data side of the phone).

If I take my phone home, it works. Other than at work, things don't work.

Has any one seen this before (google proves a number of "me toos", but no solutions that have worked for me).

I assume it's going to be a case of incompatibility with the wireless connections I'm trying - anyone with a solution that might work for me?

TIA.
Wazzä