when i install some softwares then it always shows:

nokiia-N900-42-11:~# apt-get install maebo
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:
python-lxml: Depends: libxslt1.1 (>= 1.1.18) but it is not going to be installed
python-numpy: Depends: libblas3gf but it is not going to be installed
Depends: liblapack3gf but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

how to solve this problems, thanks a lot!