I've disabbled r&d mode now everything is fine.. but when I try to install some apps it says: missing packages:

libqt4-core(>=4.6.2~git20100224)
libqt4-dbus(>=4.6.2~git20100224)
libqt4-gui(>=4.6.2~git20100224)
libc6 (>= 2.5.0-1), libgcc1 (>= 4.2.1),
libqt4-maemo5-core (>= 4.6.2~git20100212),
libqt4-maemo5-dbus (>= 4.6.2~git20100212),
libqt4-maemo5-gui (>= 4.6.2~git20100212),
libqt4-maemo5-maemo5 (>= 4.6.2~git20100212),
libqt4-maemo5-xml (>= 4.6.2~git20100212), libstdc++6 (>= 4.2.1)

I hope there will be a maemo update to fix this soon.. or is there some other solution?