In a recent question Should I dump my savings into my student debt?, there was push back from a member regarding the strong advice to save to the match.

Is there ever a time to not deposit to the match, and pay other debt off faster?

(To those not familiar with the 401(k), it is a US retirement account, which often has a feature where the employer will 'match' the deposits of the employee, up to a certain level. For example, my employer matched up to the first 6% of my income. At year end, if I deposited, say 10% of my salary, I would see a total 16%, as 6 was matched.)