Hello everyone.
I can't use any application from MAEMO.

When I'm trying to install any application (for example: YTube) I get this message:

Unable to install 'YTube'. Some application packages required for the installation are missing.

So I click on Details > Problems and I see this:

libqt4-core(>=4.7.0~git20100909-0maemo1+0m5)
libqtgui4 | libqtgui4-gui (>=4.6)
libqt4-core(>=4.7.0~git20100909-0maemo1+0m5)
libqt4-network (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-core (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-core (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-core (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-xml (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-core (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-core (>= 4.6.2~git20100224-0maemo1+0m5)
libqt4-network (>= 4.6.2~git20100224-0maemo1+0m5)

... and a lot more lines.

I don't know what to do.
Please help.