Mine has been sucking down the batteries the last few days...I haven't upgraded the firmware but did fight to get Canola installed (ultimately gave up) and played with a couple other media players...including Rhapsody music service.

The only WIFI app that runs continuously is the weather app.

Being connected to the local network, using WEP, really seems to shorten the life.

I've had a couple of weird occurrences. When left on the charger, overnight, I've opened it to find the screen on (after locking it, after connecting to power.) When I turned it on it said it only had 2 hours of life. Turn off WIFI and it claims 7 hours.

Having an internet tablet that can't stay connected to the internet without severe battery drain kind of defeats the purpose.

An update:

Took it off the charger and it reported 2 hours battery life.

Disconnected from WIFI and it changed to 7 hours.

Reconnected to the WIFI network, but did not start the browser and it still reports 7 hours life.

Started MicroB browser and it bounced down to 4 hours but rebounded back to 6....then 7.

Not sure what process causes the intense CPU cycling...but it is OK for now.

I'll also have to check if logging on and off the WIFI network works to "fix" the problem.