I'm getting the following error all the time on a clients SBS2003 box. The server is a Dell PowerEdge T300. I've run the Dell diagnostics on the SAS controller and both drives, and everything comes up good. Everytime the server is rebooted, it requests a chkdsk, which runs, completes, sometimes fixing errors, then boots normally. I am seeing some other things, like trying to update the LogMeIn client, and it says the directory is corrupt, and won't install. It doesn't appear that I have a hardware failure, so i'm at a bit of a loss on how to correct this, as the system doesn't seem to be able to itself. Otherwise, the server seems to run with no other issues.
Event ID 55 The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:.
EDIT: This is now accompanied by a taskbar balloon: The file or directory C:\$MFT is corrupt or unreadable