Shut down TeamDrive properly. This can also be caused by the computer crashing from time to time (which doesn't allow TeamDrive to be shut down properly). This could also be a sign that your hard drive may be going bad. I would recommend checking the disk for errors during a boot or something similar. I'm not very familiar with Linux but I think you know what I mean, since some drives cannot be completely scanned while the OS is running you sometimes have to start the computer in 'safe mode', 'scan during boot' or boot from a recovery disk. Those are my experiences on Windows and OS X and I'm just assuming there is something similar on Linux. Please check your hard drive to make sure it is, in general, okay.