I recently bought an EFA 512Mbit Longcart and have been using it a lot. I 'charged' it for 8 hours, and programmed it on an XP machine using this, etc. I tried it out with Mother 3 on my GB Micro and it doesn't load most of the time, and when I do get it to load, it freezes rather often. I tried playing other GBA games in the micro and every once in a while they would also freeze. I chalked it up to the micro being broken, but now that I've been using the cart on my DS Phat, I'm beginning to experience freezing issues there. I haven't tested my Phat out extensively, but is it possible that the Longcart is somehow breaking my systems?