I've noticed on my Video hard drive that 3 folders have appeared with long filenames, such as , bf948804b17110525cd6493c9e63f30a, bf948804b17110525cd6493c9e63f30a and d03d75a9542d762bc9. All 3 show as 0 bytes, 1 folder, with a folder called 'update' in each. When I try to delete the main folders, it puts up an error message "Cannot delete update: Access is denied." and if I try to open it, it says "G:\8908b94a85e473b312d6\update is not accessible. Access is denied."