i had my acekard for a while now and had it with the DSLite
now i just got a DSi a week or 2 ago.. and when i popped it in... it didnt even show icon to load up
and when it did show id get a black error
so i did sum testing and found that
if slide a plastic piece of sumthing in the back of the card and the ds it will hold the card stiff forward a lil and it shouldnt move at all..
i took a price tag from shoprite and just cut a square piece like 1/3 of a inch size and lenth
now since i did that im guessing the gold pins are now touching better and it wont move causing to freeze or anything... itss been 1 week now and i havnt had any problems ... only that sum (usa) games wont boot.. but a (eur) game will... my console is from usa (ny) so i dunno lol
but yea try that