This build fixes an issue with HTTP redirects, so your custom WordPress installations should work much better now. Maemo version no longer has black text on black background in the drop-down menus.
If you have any test results or feedback, please let us know!
Edit: Maemo build had a grave packaging issue, so the new 0.5.1b build is fixed. So if you installed the plain 0.5.1, please reinstall. Sorry for the inconvenience!