Journal Errors?

[FollowingGhosts]

So, I have my Pi booting from SD and handing over to the SD card on the stock image with newest kernel, however, when I get to the login stage, I type my username (pi) hit enter, it hangs for a while then I get presented with page errors, then journal commit I/O errors and then EXT4-fs errors.
Any input is appreciated

[FollowingGhosts]

So, from what I can tell, the USB reinitialises at some point during the boot process, losing the root FS mount and therefore making the Pi very sad indeed.
It's just after Starting NFS common utilities, which fails, then a big scrolling line of text with INIT errors and respawning and terminating processes.
Anyone got any ideas how to fix this?

[FollowingGhosts]

Fixed, Amazingly it was because of power issues, now my Pi seems to be running fine.