I'm unable to finish installation of mongoDb under debian 7 (Wheeze).
It crashes at the end of the process and database does not start at all:

1. apt-get install mongodb-10gen
   Reading package lists... Done
   Building dependency tree
   Reading state information... Done
   The following NEW packages will be installed:
   mongodb-10gen
   0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
   Need to get 88.0 MB of archives.
   After this operation, 225 MB of additional disk space will be used.
   Get:1 http://downloads-distro.mongodb.org/repo/debian-sysvinit/ dist/10gen mongodb-10gen amd64 2.4.9 [88.0 MB]
   Fetched 88.0 MB in 12s (6,849 kB/s)
   Selecting previously unselected package mongodb-10gen.
   (Reading database ... 33558 files and directories currently installed.)
   Unpacking mongodb-10gen (from .../mongodb-10gen_2.4.9_amd64.deb) ...
   Processing triggers for man-db ...
   Setting up mongodb-10gen (2.4.9) ...
   Adding system user `mongodb' (UID 104) ...
   Adding new user `mongodb' (UID 104) with group `nogroup' ...
   Not creating home directory `/home/mongodb'.
   Adding group `mongodb' (GID 107) ...
   Done.
   Adding user `mongodb' to group `mongodb' ...
   Adding user mongodb to group mongodb
   Done.
   [FAIL] Starting database: mongodb failed!
   invoke-rc.d: initscript mongodb, action "start" failed.
   dpkg: error processing mongodb-10gen (--configure):
   subprocess installed post-installation script returned error exit status 1
   Errors were encountered while processing:
   mongodb-10gen
   E: Sub-process /usr/bin/dpkg returned an error code (1)

Trying to start anyway:

1. /etc/init.d/mongodb start
   [FAIL] Starting database: mongodb failed!