Dissecting a Dashboard Virtual Earth Widget
Subject:   Dashboard
Date:   2005-12-06 19:27:22
From:   hagus
Response to: Dashboard

Sounds like you need a faster Mac! ;) But yes, performance remains a concern for Dashboard widgets. There is a trade-off in that you want them 'ready to go' when you hit the Dashboard button, but you don't want them loading, caching, and being mischievous in the background while you're working. It is something that Dashboard developers have to bear in mind, and something that Apple will incrementally improve over time.