I had a power outage, twice I think. It left my SME server stopped at a prompt:
boot: Unexpected Inconsistency. Run fsck manually
It asked for the root password to go to command line and run fsck. The prompt was something like
filesystem #1
Hitting enter changes to 
filesystem #2  etc..
I then rebooted and typed 'yes'
Now all I get is a column of Y and the HDD is running full speed.
I think I will next try:
fsck -Aa to attempt a repair. 
Any suggestions?