Hey I just upgraded to 3.0, and everything seems good so far but ActiveSync just won't work anymore. Windows Mobile 5 uses a funky virtual network driver to communicate with the device (I'm sure you know this) but it's misbehaving - it won't get the correct IP address (169.254.2.2) and the ActiveSync connection is never established. (gives the "limited or no connectivity" message) ActiveSync pops up a box with some diagnostic tools that don't say anything useful. Anyone else?