Default SD card getting corrupt

Anyone else having trouble with the SD card slowly corrupting the data on it?

I am running ROM 4.00.11 and noticed after awhile there will be a program that will no longer work, then the folder will disappear from the card.

I don't recall this happening when I was running AT&T's A20 ROM.

It makes me wonder if it is something I included when I cooked the ROM or what.