hi, I have EXACTLY the same problem, i realy do not now what to do.
when i turn my NDS on it freezes immediately. u can see very bad the Healt Staus screen,
it's just like whenever it works to start your DSTT on, the less chance u have it will work the next time.
i have like 4 freeze problems when i start up my DSTT :
- White screen before Health Status screen VERY COMMON
- NDS starts up, then immediately freezes with 2 white screens VERY COMMON
- NDS starts up, top screen turns black, bottom screen is White and freezes RARE
- NDS starts up, then freezes on "Loading :)" screen RARE
- NDS starts up, DSTT starts up to :D ULTRA ULTRA RARE

Can someone help us ??? PLS ?
it takes ages to start up the DSTT, i wanna play games :'(
(i have a Kingston 8GB Micro SD HC inserted)