Penang are now taking the visa rules a bit more seriously, ie if you had a non immigrant visa issued in Penang in 2006 and in 2007 go to Penang to apply for a tourist visa, they will give you the first one, the next time you go they will give you your next tourist visa but will stamp the visa in red ink saying, "DO NOT APPLY NEW VISA AT PENANG AGAIN", whether that is for life or a few months I have no idea, so keep a few of those 30 days spare cos you may just need them
