Thread:Support/Namespaces in Quechua wikipedia

There is a strange error at the Quechua Wikipedia: Some user pages are shown as the shoud with the Quechua prefix "Ruraq:", but others get the Spanish prefix "Usuario:". How can that be fixed (ASAP)? Please follow these links:
 * http://qu.wikipedia.org/wiki/User:AlimanRuna   (normal: Ruraq)
 * http://qu.wikipedia.org/wiki/User:Miguel_Chong (wrong: Usuario)
 * http://qu.wikipedia.org/wiki/User:Ds02006   (wrong: Usuario)