Something nagged at him, but he was unable to pinpoint the cause.

Alas, they have not yet managed to pinpoint the cause.

Not full glitches, but the diagnostics couldn't pinpoint the cause.

Industry and regulators were still scrambling on Friday to pinpoint the cause for the selloff.

We weren't able to pinpoint the cause, however.

Airport officials told a news conference it was too soon to pinpoint the cause of the crash.

U.S. regulators and major exchange operators are still trying to pinpoint the cause of the flash crash.

Without having visited the fire scene, Hurst says, it was impossible to pinpoint the cause of the blaze.

But we can't pinpoint the cause.

The Securities and Exchange Commission said late Friday it was still trying to pinpoint the cause of the crash.

I couldn't pinpoint the cause.

Doctors were never able to pinpoint the cause of his problems, and were constantly arguing over how to treat him.

The study could not pinpoint the causes of the increase in heart problems.

He worried over it for a few seconds before he pinpointed the cause.

Just as epidemiologists pinpoint the causes of diseases, credit modelers uncover the indicators of undesirable consumer behavior.

Pinpointing the causes of system sluggishness has long been a frustration for data-center managers and system administrators.