This has begun to annoy me...

[Wojciech Puchar]

> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=4570911
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=42958719
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=113343327
> +ad6: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=117315327
>
> It looks like disk write errors to me, but I'm not sure.
>
yes it use.

use ports/sysutils/smartmontools

to make sure.

print smart output and/or these errors and request replacement in your 
shop.