I downloaded my Slantedlock with Cydia and am using YahooWeather in canada.
The weather info is not caching. Everytime I lock and come back on, the weather reloads itself and fetches data. I checked my data usage, it goes up 0.1 MB every 2-3 times that I lock my iphone. I did this a couple of times to make sure and it is definitely not caching.
Am I missing something here?
If you changed anything in the configuration, it will force a new fetch. You will know that the weather is cached if you turn off internet and still see weather.
Also, if your interval is too close then obviously it will fetch often. I have mine set at 60 minutes.