I own a DS Lite and an R4 card (have had the R4 for over a year now and it was working perfectly prior)-- the R4 card is a "R4 Upgrade Revolution for DS" (the site provided on the R4 card is www.R4i-SDHC.com), and the microSD card is a Sandisk one. Recently, my R4 has been acting strangely. When I insert the card and then turn it on, I get past the loading screen, but when on the game selection screen, the screen freezes. I am not sure what is wrong. But the DS itself is functioning normally, as I can play other game cartridges on it. It was working fine around a month ago, then I stopped playing on the R4 because I got a couple new game cartridges, and stowed the R4 in my game case. I pulled it out yesterday to give it a try and it refused to work. I really don't know what could have caused it, because I take good care of my games (don't get them damp, don't knock them about etc)... This is my first R4 card and I'm really not sure what is wrong or how to fix it... can someone please help me? Thank you!