Thanks, I tried that one before. It does control the Wi-fi but seems unable to control the data connection on my SGS.
I just tried Timeriffic, which surprisingly does turn on and off my data at the scheduled times, until I realized I now can't turn it on manually off-schedule anymore... This is really frustrating
edit:
Issue 43 - autosettings - [Timeriffic] Add ability to turn Mobile Network Data On/Off - Project Hosting on Google Code
looks like I should stop hoping to find something... too bad.
Shouldn't be too much to ask of an expensive phone to be able to receive E-Mails and such on the go without having to drain my battery with internet always running.