what do u mean by that?,sorry cant understand clearly :P

i deleted My-Maemo repository & enabled devel,testing repos to install the dependencies.
i tried apt-get -f install xarchiver:

~ $ root


BusyBox v1.20.2 (Debian 1.20.2power3) built-in shell (ash)
Enter 'help' for a list of built-in commands.

Nokia-N900:~# apt-get -f install xarchiver
Reading package lists... Done
Building dependency tree
Reading state information... Done
xarchiver is already the newest version.
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
xarchiver: Depends: zip but it is not going to be installed
Depends: p7zip but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
Nokia-N900:~#

then i tried as suggested above:

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:
p7zip zip
Suggested packages:
p7zip-full
The following NEW packages will be installed:
p7zip zip
0 upgraded, 2 newly installed, 0 to remove and 4 not upgraded.
1 not fully installed or removed.
Need to get 583kB of archives.
After this operation, 1516kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://repository.maemo.org fremantle/free zip 3.0-1maemo5 [234kB]
Get:2 http://repository.maemo.org fremantle/free p7zip 9.04~dfsg.1-1-m5-1 [349kB]
Fetched 583kB in 3s (182kB/s)
Selecting previously deselected package zip.
(Reading database ... 35151 files and directories currently installed.)
Unpacking zip (from .../zip_3.0-1maemo5_armel.deb) ...
Selecting previously deselected package p7zip.
Unpacking p7zip (from .../p7zip_9.04~dfsg.1-1-m5-1_armel.deb) ...
Setting up zip (3.0-1maemo5) ...
Setting up p7zip (9.04~dfsg.1-1-m5-1) ...
Setting up xarchiver (0.4.6-7fremantle7) ...
Unknown media type in type 'sketch/png'

Nokia-N900:~#

is it ok now?