One of the users wrote me an e-mail that after uninstalling Power Schedule, when he turned on Airplane Mode, WiFi was still enabled. This is because Power Schedule (and others) change this setting to allow individual control over WiFi, Bluetooth and Telephony. Since the application being uninstalled is not notified it’s being uninstalled, it has no chance of cleaning up (and restoring previous settings). This is how Android is designed (a bit of a flaw, in my opinion – on Windows Mobile an application was notified before uninstall).
Anyway, I wrote a small app to restore the settings. Download and install it using Astro or whatever file manager you have on your device.
Here’s the link: