Macintosh Titanium iBook owners know this all too well: the titanium case blocks wireless Internet signals from Apple's internal AirPort card, despite the supposed in-case antenna. This little design flaw makes the cheaper, plastic iBook much more valuable for heavy wi-fi users. The solution is obvious: get a wireless card that sticks out of the case. Apple doesn't make one, and the others you can buy are all for Windows PCs. Open Source community to the rescue!