i get the whitescreen ever time i get on it and when i type apt-get install libqtm-11 on the xterm i get this

Nokia-N900:~# apt-get install libqtm-11
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
libqtm-11: Depends: libqtm-11-declarative (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-location (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-contacts (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-multimedia (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-publishsubscribe (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-versit (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-messaging (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-systeminfo (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
Depends: libqtm-11-serviceframework (= 1:1.1.4-0fn~fremantle0) but it is not going to be installed
libwrt-api-experimental1: Depends: libwrt-experimental1 (= 1.1tp-3) but it is not going to be installed
qtwrt-experimental: Depends: wrt-experimental (= 1.1tp-3) but it is not going to be installed
Depends: wrt-api-experimental (= 1.1tp-3) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

please help thank u