Anybody else having this problem? My data will just stop entirely - sometimes for only seconds and other times for several minutes - then sometimes come back again (usually it does). I've not been able to identify any rhyme, reason or trigger. It just goes from 4G to nothing and I'll have to restart. If anything, it seems more likely to do that the longer it's been running since its last restart. While there are other little issues with my Thunderbolt, this is by far the most annoying - even more so than the random restarts which, thankfully, are just a couple of times a week now. I restart my phone every morning, but stream music almost all day - usually via my office's WiFi but sometimes through my own connection. Any ideas? I'm rooted, so if putting on a custom ROM would help, I'm for it (just hate all the hassle that goes with that).