The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume \Device\SymantecSnapshot\Volume0.
What's this error about?
<Provider Name="Ntfs" />
<EventID Qualifiers="49156">55</EventID>
<Level>2</Level>
<Task>2</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-12-11T17:12:41.310616300Z" />
<EventRecordID>376204</EventRecordID>
<Channel>System</Channel>
<Computer>JiriPik-VAIO</Computer>
<Security />
</System>
<Data />
<Data>\Device\SymantecSnapshot\Volume0</Data>
<Binary>00000C000200380002000000370004C000000000020100C000000000000000000000000000000000EE0C14004C0C010000006F00</Binary>
</EventData>
</Event>