Thanks for the details. A poster in another thread happened to mention that they were also getting 404's, and I was able to track down what caused that problem (which was the same problem that you are having with mobile.voxalot.com).
With a bit more testing to go, this fix should be deployed to production in the next day or so. This should, at least, get mobile.voxalot.com working for you (and others).
We are still working on getting
Voxalot - Home working properly for Windows Mobile 5 users. I will be sure to report back here as soon as we make any decent progress.
Thanks again for your patience.
--
craig