Well, there's a potential hangup right there. Most widgets will run as a service in the background and eat your RAM/CPU. I've seen all kinds of widgets that boast about how compact they are based solely on the size of the app, but the download size really isn't what you are concerned with; it's the amount of your limited memory that is going to be consumed physicaly running the widget on your device.
Android is very reluctant to shut down services. For instance, I've been trying out a new battery and used a nice battery widget to monitor performance. That's all fine and good, but it ate 20 megs
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*/ Do it again!