Apple has been sued in a California court over the iPhone 4’s glass housing. LA Weekly reports that Donald LeBuhn has filed a class action suit in L.A. County, claiming that the company is aware of the problem and refuses to warn customers that “normal” use of the device could lead to a broken glass panel. Citing LeBuhn’s suit, the report states that he purchased an iPhone 4 in September, and has the glass break on him three…