I don't know what causes it, but I just barely started using the EDGE I ordered some months ago, like really using it. I've got a stupid weird problem with it, though... Sometimes when I turn on the DS, it says there's no cartridge inserted, so I remove it and reinsert it and sometimes that fixes it.. Though, when it does work, sometimes, randomly, the game I'm playing will glitch out and then I'll turn on and off the DS and I'm back @ "No cartridge inserted". Is there something wrong with my Edge or is there something wrong with my DS? Is there anything I can do to troubleshoot this? Thanks in advance!!