My Motorola H17 bluetooth worked well before the Jelly Bean Update. Since the update, it does not recognize my voice commands and returns Sara Clark for Sam Jones). The call quality (once connected) is fine, however. I would say that before the update, the voice commands were 90% accurate. This now prevents me from placing calls from my bluetooth which is a safety issue. I have re-booted and re-paired the device with no change in its behavior. Otherwise I am happy with the Jelly Bean update.
Yes, I agree placing calls from your bluetooth is important for safety while driving. Have you replaced the bluetooth? I would attempt to replace the bluetooth since the H17 is fairly new and may still be under the one year warranty.
Since you have already un-paired and re-paired your bluetooth, we do recommend as Stef7 mentioned to perform a master reset. Especially after the most recent software update to JellyBean. Here is a link that is going to assist you with performing backups and the master reset on the device: http://bit.ly/QrcRFW . If you need any additional assistance, please feel free to contact us again. I am confident that the master reset will fix the bluetooth issue.