¿Qué tal algo como
SELECT DISTINCT messages.fromid,
messages.readed,
messages.fromid,
messages.toid ,
members.id AS pid
FROM messages
INNER JOIN members
ON members.id = messages.fromid
WHERE messages.toid = ".$mid."
AND members.status = 7
AND messages.kreaded !='1'
AND messages.subject != 'readed'
ORDER BY messages.fromid ASC,
messages.id DESC
O
SELECT DISTINCT messages.fromid,
messages.readed,
messages.fromid,
messages.toid ,
members.id AS pid
FROM messages
INNER JOIN members
ON members.id = messages.fromid
WHERE messages.toid = ".$mid."
AND members.status = 7
AND messages.kreaded !='1'
AND messages.subject != 'readed'
ORDER BY messages.fromid ASC,
messages.sendtime DESC
En mensajes.fromid ASC el ASC es puramente sintácticamente, ya que ORDER BY sin especificar ASC/DESC asume ASC.
SELECT *
FROM TABLE
ORDER BY COL ASC
es lo mismo que
SELECT *
FROM TABLE
ORDER BY COL