I've got the same problem with a different flash drive. I've got a CORSAIR 16GB, and for the past 6 months it's been working fine on my Ubuntu system. As of today however, it is no longer recognized. The thing still works on XP, and my other flash drives still work on Ubuntu, so I'm a little mystified and a little frustrated. Anyways, at least you know you're not alone. I also got my flash from NewEgg, but again that was 6 months ago.