Each edition of Awasu imposes limits on how often channels many be updated.
As feed syndication becomes more popular, bandwidth is becoming more of an issue. Hundreds or thousands of people querying a web server every five minutes can cause significant problems for that server. Many sites are run by people paying for things out of their own pockets and excessive bandwidth bills can easily force them to shut down.
There are very few feeds that change so often that they need to be checked every five minutes so please be considerate when configuring your channels.