I got a similar problem after having updated Windows!
ActiveSync didn't recognize my PDA (Compaq 3660) anymore
and Infra red connection with my Laptop was unabled. Those
kinds of problems are reported by Windows (Updates bring
more security but some functions are lost!...)
Best regards
Luc

>-----Original Message-----
>Randomly my unit will not sync to outlook it gets lost.
>According to Toshiba thier unit is not compatible with
>Exchange Server 2000 and I need to be running Mobile
>Information Server to sync between my desktop and my PDA.
>Any suggestions. If I reinstall the unit it will sync for
>a few weeks and then gone again. I have four of these
>units and each one functions the same.
>.
>