We are seeing several threads about these issues, mostly poast-update issues. In the other thread, I mentioned how I spoke with a level 2 tech from Motorola after experiencing now or slow 3g connection after the update, she suggested Motorola is already readying another update with the sole interest in fixing the connectivity issues we've been experiencing. I hope that is true, these data issues are ridiculous and very uncharacteristic of Motorola.
Also, the morning after the update I had no 3g/4g for hours, until I noticed my cellular data option was disabled overnight for what appeared to be no reason. Once I enabled it again, it always seemed to look for a signal, but only 1 out of every 5 times would it find a 3g network.