Last night I picked up my phone and pushed the Menu button. The phone flickered on for a split second and then fell dead black. The phone was completely unresponsive. I googled a bit and found a reset command: Hold down the power button and Menu button for 6 full seconds.
The phone came back to life. But hmm… every phone call I made today had poor cell phone reception :-(((. I uninstalled all the apps I had installed over the last couple days just in case those contributed to the problem. Those programs include: Falling Balls, UStream Viewer, PAC-MAN Lite, and iEphemeris Lite.
I tried pushing that reset sequence again today and the iPhone crashed or something such that it said that it would only make emergency calls. I left the phone off for 1/2 an hour while I went shopping (rather miffed and paniced that my expensive toy might be broken), turned it on again and it gave me a message like “iPhone activated [Ok]”. And now it seems to work fine.