Verizon 3G Network Problems

I've still been having some intermittent 3G connection problems with Verizon Wireless. I hope they've made all their upgrades by now. Maybe it's my phone. I wonder how often people have problems on other carriers like Sprint, T-Mobile, AT&T, and others. Overall, I've been happy with Verizon Wireless, but these recent network outages have been very frustrating.