Dear friends I suddenly have a major problem with my n900!

A couple of hours ago I was tempted to install the app 'WiFi Switcher' which was said to make wonders as far as battery life is concerned! The thing is that since installing this particular app I CANNOT connect to any WiFi at all... I tried uninstalling and reinstalling the app and the problem is still there!

As I reckon, since the app unloads the kernel modules for the WiFi (as it says), something might have been stuck and now it's not working... Is there any way to force the system to reload the modules manually...?

My n900 was running ABSOLUTELY FLAWLESSLY for the past 2 months!

I feel a little desperate guys here...