I can confirm that the rootflags boot option doesn't work, at least with locale=es_ES.utf8. I get the same warning that Mads Peter Rommedahl mentioned, something about the locale that couldn't be set and pointing me to http://ntfs-3g.org/support.html#locale.
I don't know if it's worth mentioning this, but when I installed Wubi I changed some boot option (before the first boot into Ubuntu) from es_AR to es_ES (I think Wubi should select that locale for the Spanish language instalation). I don't know if it could have an effect on my tests.
The version of Wubi I used is Wubi-8.04-beta-rev501.
I can confirm that the rootflags boot option doesn't work, at least with locale=es_ES.utf8. I get the same warning that Mads Peter Rommedahl mentioned, something about the locale that couldn't be set and pointing me to http:// ntfs-3g. org/support. html#locale.
I don't know if it's worth mentioning this, but when I installed Wubi I changed some boot option (before the first boot into Ubuntu) from es_AR to es_ES (I think Wubi should select that locale for the Spanish language instalation). I don't know if it could have an effect on my tests.
The version of Wubi I used is Wubi-8. 04-beta- rev501.