My phone was working fine for a bit and then it stopped "sending" info to the web. I can see that is getting a fix, finding satellites, etc., but it does not show that it has "sent" info and I do not see it on the computer either.
Either your phone is out of Nextel/Boost coverage, or your phone data plan is not working (could mean the phone is out of prepaid minutes if it's a prepaid phone), or there's a Nextel/Boost outage in your area.