Jon Rubinstein, the chairman of Palm, is once again striking former boss Steve Jobs where it hurts — Apple's talent. The latest hire: Lynn Fox, the head of Mac PR, joined Palm earlier this month. For a PR person, she's made the move surprisingly quietly; her name has yet to appear on any press releases. As with Mike Bell, the Apple veteran who now heads Palm's product development, Rubinstein is likely trying to keep things quiet. Relations between Palm and Apple, whose iPhone is walloping Palm's Treo, are tense enough as it is.