Glazed linings and a very smooth drum surface in the context of a vehicle's braking system are likely to cause the following complaints:
1. **Chatter**: When brakes chatter, it means there is a vibration or shaking sensation felt while applying the brakes. This can occur due to glazed linings and a smooth drum surface because the lack of friction between the brake lining and drum can lead to inconsistent braking and vibrations.
2. **Squeaks**: Squeaking noises from the brakes can also be a result of glazed linings and a smooth drum surface. The lack of proper grip or friction can cause the brakes to produce squeaking sounds during operation.
Therefore, in the context of the question, the likely complaints resulting from glazed linings and a very smooth drum surface are chatter and squeaks in the vehicle's braking system.
