After changing the filter my Dyson DC25 is like new again! Fantastic and a lot cheaper than a new vacuum! When the vacuum cleaner started overheating I thought it was dead. After some internet research for symptoms, the suggestions mostly related to clogged filters. Apparently we forgot to read, understand and fully understand the filter and maximum level instructions! Lesson learned. Now that we know how to do that, let's take care of the filters properly! Thanks for a great product. This has restored our confidence that the DC25 is running over 5 minutes every hour!