I have observed the same issue. In the first two boot wifi was not working (i.e. it was searching active wireless networks around). The third and following boots it has started working. I have tested AndAppStore and installed a few games and dictionaries. They indeed have so many quality dictionaries ported for Android. I wish N900 had some of those.

One else thing I have noted was live wallpapers. They don't seemingly work as of yet.