uncompressing files?
 

i have this file here, that i would like to uncompress
ktorrent-3.0.0.tar.bz2.gz.bz2

but for some reason
tar -zxvpf ktorrent-3.0.0.tar.bz2.gz.bz2
dosent work. any sudjestions?

The z option doesn't work for bz2 compressed files; it's does work with gz compressed files. So, to unpack a bz2 archive, you need to add the -j or the --bunzip2 flag:
tar -jxvf <filename>tar.bz2
tar --bunzip2 -xvf <filename>.tar.bz2

or, unpack the file in two steps:
bunzi2 <filename>.tar.bz2
tar -xvf <filename>.tar

For more on tar, see the man pages.