Konquer dependency problem.

[igor@ta2000.dyndns.org]

Hello I'm trying to ugrade konqueror from 2.2.1-3 to 2.2.1-4.
Now there are some dependency problems appear when I type:
"apt-get install konqueror"

Sorry, but the following packages have unmet dependencies:
  kdebase-libs: Depends: kdelibs3 (>= 4:2.2.1-5) but 4:2.2.1-4 is to be 
installed
  konqueror: Depends: kdelibs3 (>= 4:2.2.1-5) but 4:2.2.1-4 is to be installed
  libkonq3: Depends: kdelibs3 (>= 4:2.2.1-5) but 4:2.2.1-4 is to be installed
E: Sorry, broken packages

Here is my /etc/apt/sources.list:
deb http://http.us.debian.org/debian unstable main contrib non-free
deb http://non-us.debian.org/debian-non-US unstable/non-US main non-free
deb http://security.debian.org/ potato/updates main contrib non-free

Any ideas on why konqueror and others depend on 2.2.1-5 when only 2.2.1-4 is 
available ?