Since last tiles@home update there are Problems with Unicode rendering.
See:
Beijing:
http://informationfreeway.org/?lat=39.75820846018085&lon=116.57961649164565&zoom=9&layers=B000F000

Or in Laos:
http://informationfreeway.org/?lat=14.804513021757694&lon=106.78805367103163&zoom=9&layers=B000F000

I also tried to load the coastline data for South East Asia with JOSM - but no success.