Downtime.  It can be the result of a software bug, human error, equipment failure, or something else that can ruin a perfect business day.  However, unplanned downtime is no reason to let your business suffer.  Preparing for such instances may save your company valuable time and money.  These should be on your list of things to do if this occurs:

1. Fix the problem asap or find someone who can.
   
2. Contact clients who's projects may be affected by the problem.  While clients may not be pleased with the news, most will understand the situation and appreciate the call.
   
3. Encourage workers to stay on top of their duties.  If they are incapable of continuing a project because of the situation, see what you can do to help them fix it or find something for them to do until then.
4. Make a list of who to call or what to do if it happens again.

If you have done everything possible but still have to wait on something to get started again, let it be a time to focus on what you can do to improve business.  Get together with your team to brainstorm new ways to reach potential clients.  Gather more information on your competitors and how you can make yourself stand out.  Follow up with clients you haven't spoken to in a while.  These are all just suggestions, I'm sure you can think of something you've been meaning to do, but just haven't made time for.

I firmly believe that downtime is not wasted time.  I hope it isn't for you and your business.