Problem with SD Card Read/Write

[adepssimius]

I have been having trouble getting an install of xbian to work on both of my pi's (I have been using 1.0a4). I have a 256 and a 512, and after several reboots they always start to give me journal I/O errors and fail to boot.

The weird thing is it only occurs when I am using an SD card. I copied an installation to an external hdd and I now just use the SD card to boot the root partition stored on the hdd and I have incurred no problems since then.

I have tried three different brands of SD cards but still no luck. I am using an iPad charger as a power supply (rated for 2.3A) so I'm pretty sure that isn't the issue. I am also careful to use the sync command before powering down or unplugging the pi. The issue occurs at the default clock speed as well as when overclocked.

SD Cards tried:
1. Amazon Basics 16GB Class 10
2. Sandisk 16GB UHS Class 1
3. PNY 2GB unknown speed, but slow

Any ideas?