Galaxy S stuck on 'Galaxy S' boot screen

I had the same problem shortly after I got my Galaxy S back in June.  I called the Samsung support people who told me there was no way I could recover from that without taking it to the Samsung service centre.  I'd already tried the power-up sequence for a factory reset but nothing happened. So I took it in to their service location  and they told me it needed a complete reinstall of software.  Fromn the way the person told me that, it  appeared that I was not the first customer to have come in with that problem. 

The bad hnews of course was that I lost all the data and apps I'd installed, but the good news was that they did the re-install within about 45 minutes and the phone has worked fine ever since then (I upgraded it a few weeks ago, so hopefully the bug that caused the original problem is no longer present anyway.  I didn't know much about the internal workings of the phone at that point, and maybe if I'd faffed about with it (techn ical term) for long enough I might have got it working. 

Good luck!

Same problem here. Called Samsung, they walked me through a deletion of all users files and cache but that still didn't work. They guy said it was a very rare issue and that I could send it in or hopefully get it exchanged by T-mobile.

On my way to T-mobile now..........

*EDIT* Got a replacement from T-mobile. I'm a little concerned about what caused my phone to go bad. Maybe it was just a defective phone. I kinda think it might have been a 3rd party program I downloaded. Hopefully it wont happen again as I download my apps again.