I have R4 1 gig in my NDSL. im playing Castlevania POR, it stuckup in between the game, mostly when taking the teleportation. i tried 3 version of the ROM but still get the same result. Do you encounter the same problem in your R4? Do you know anything how to resolve this problem(maybe a patch or so)?
what kind of memory card do you have? e.g. kingston, sandisk,a-data cuz most memory cards have trouble playing that game here is a compatibility chart for memory cards and games http://wiki.scorpei.com/index.php/R4_compatibility_list
I had the same problem and im using a 2 gig sandisk, It kept happening on CERTAIN teleports so I stopped using those but then it happened in a certain area during gameplay, and I didnt save. Thats when I finally said fusk u and stopped playing it =/
what kind of memory card do you have? e.g. kingston, sandisk,a-data im using sandisk. i guess it really has an issue of memory compatibility... thats so not cool hope R4 v1.10 will have that fix...