However, diagnosis has been somewhat problematic and error prone.

Enforcing the smoke-free law appears to be somewhat problematic as far as public bus services are concerned.

Pedal points are somewhat problematic on the harpsichord or piano, which have only a limited sustain capability.

But since most celestial objects require a long exposure, compact consumer digital cameras are somewhat problematic due to their high inherent sensor noise.

Several characteristics of the magnetron's power output conspire to make radar use of the device somewhat problematic.