Mini Y2K all over again

When congress changed the daylight savings time standard, we saw the fragility of our computer infrastructure once more. It's the Y2K problem all over again, granted on a much smaller scale as time will only be off by an hour, not a century. Several of our clients have asked about this issue, as well. So I pose this question to you, blog readers! What are you doing about this time change? Do you think it will cause problems for your organization? Are the vendors responding quickly enough? How do you handle custom applications?