Mobile Posting

Sometimes I just don't understand mobile posting, that or I'm just impatient. Last Saturday, I attempted to post 2 entries from my phone. Typically I get a response back from the server saying that they were posted with in a few minutes, this time, those replies never came. I tried and tried, sent the same posts several times, and nothing happened. The next day, the only way I managed to get the post to work was by deleting the device from the mobile list and then re-adding the device. While a pain, not a problem, things seemed to be working from that point on. Now for the interesting part.... today I've received 4 replies to the blog entries I sent on Saturday. My question is, was it my phone/service provider causing the issue, or was it a blogger issue? Who know... I just hope that it doesn't happen too often.