I had the same issue after updating to 2.2.3. The problem was solved after installing the modem firmware.
Anyway, recently my phone started to shut down randomly. Without any reason=) I even got late to my classes, because it shut down during the night and the alarm clock failed to make its job)
And another bug is HUGE battery drain. Once it went from 95% to just 3% in just 1 minute, during which the phone I tryed to unlock the phone=)
Anyway I love my veer=)
P.S. Try to reinstall the modem firmware.