I bought my M3 real (perfect bundle) about 4 months ago. It's been great up until the last two weeks, when it's been freezing, usually after about a half hours playing time. (This is pretty frustrating on games with rare saves - FFIV final dungeon!) I've seen some people here suggest sliding paper in to try to help the cart connect properly, but from the look of the connection points, the DS is making contact in the center of the strips. The memory card is the same. I tried sliding some paper down on the offchance, but it carried on freezing. Is there anything else I should try? I bought it from Techwizard - does anyone have any experience of their custome care, or if I'm likely to be able to get a replacement? If not, will I be able to use my GBA expansion pack and rumble pack with non-M3 cards, were I to buy a replacement. I was impressed with te M£, but expected it to last longer than four months, so would want one likely to last a bit longer. Any words of wisdom greatly appreciated.