Sorry, I might have said "apt-get dist-upgrade"; this is the copy-paste of terminal sequence:
[pep@localhost ~]$ su
Password:
[root@localhost pep]# apt-get update
Get:1
http://ftp.nluug.nl pclinuxos/2010 release [2883B]
Fetched 2883B in 0s (12.2kB/s)
Hit
http://ftp.nluug.nl pclinuxos/2010/main pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/main release
Hit
http://ftp.nluug.nl pclinuxos/2010/updates pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/updates release
Hit
http://ftp.nluug.nl pclinuxos/2010/nonfree pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/nonfree release
Hit
http://ftp.nluug.nl pclinuxos/2010/kde4 pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/kde4 release
Hit
http://ftp.nluug.nl pclinuxos/2010/games pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/games release
Hit
http://ftp.nluug.nl pclinuxos/2010/xfce4 pkglist
Hit
http://ftp.nluug.nl pclinuxos/2010/xfce4 release
Reading Package Lists... Done
Building Dependency Tree... Done
[root@localhost pep]# apt-get --fix-broken install
Reading Package Lists... Done
Building Dependency Tree... Done
0 upgraded, 0 newly installed, 0 removed and 41 not upgraded.
[root@localhost pep]# apt-get dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Failed
The following packages have unmet dependencies:
gtk-doc: Depends: dblatex
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
[root@localhost pep]# apt-get --fix-broken remove
Reading Package Lists... Done
Building Dependency Tree... Done
0 upgraded, 0 newly installed, 0 removed and 41 not upgraded.
[root@localhost pep]# apt-get dist-upgrade
Reading Package Lists... Done
Building Dependency Tree... Done
Calculating Upgrade... Failed
The following packages have unmet dependencies:
gtk-doc: Depends: dblatex
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
[root@localhost pep]#
Thanks a lot!