I have this problem when installing what I have to do?

Nokia-N900:~# apt-get purge
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:
maepygallery-qml: Depends: qt-components-10 but it is not installed
E: Unmet dependencies. Try using -f.
Nokia-N900:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
qt-components-10
The following NEW packages will be installed:
qt-components-10
0 upgraded, 1 newly installed, 0 to remove and 33 not upgraded.
4 not fully installed or removed.
Need to get 0B/1004kB of archives.
After this operation, 4887kB of additional disk space will be used.
Do you want to continue [Y/n]? Y
(Reading database ... 96638 files and directories currently installed.)
Unpacking qt-components-10 (from .../qt-components-10_1.0-pre1-3+0m6_armel.deb) ...
dpkg: error processing /var/cache/apt/archives/qt-components-10_1.0-pre1-3+0m6_armel.deb (--unpack):
trying to overwrite `/usr/lib/qt4/imports/Qt/labs/components', which is also in package qt-components
Errors were encountered while processing:
/var/cache/apt/archives/qt-components-10_1.0-pre1-3+0m6_armel.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)