I have a 4th gen iPod Touch and an iPad 1... is it worth upgrading to IOS5 or should I wait?

Wait for what? iOS 6?

Last night's problems were only due to extremely high demand for the update. There are no fundamental problems with iOS 5 its self.

Oh. Usually there comes a mass panic after an update about crashes and batteries draining.

Sorted then. I'll get on it tonight.

Cheers!