USB drive keeps getting corrupted

I've had a RT86 for about two months. As soon as I got it, I installed Merlin and installed a USB drive on which I installed entware, diversion, and played around with a couple other packages. My drive got corrupted, so I re-partitioned and re-formatted it (used ext2 both times). This time I only installed entware and diversion, and after about two weeks the drive has gotten corrupted again.

I'm using a fairly new cheap 16GB Kingston usb drive from target. Could it be the flash...

USB drive keeps getting corrupted