Nokia-N900-02-8:/# du -xh -d 2 | grep [0-9]M
1.6M    ./etc/gconf
6.1M    ./etc
7.8M    ./lib/dsp
4.3M    ./lib/modules
15.9M   ./lib
34.3M   ./var/lib
8.5M    ./var/log
42.9M   ./var
33.9M   ./usr/bin
206.6M  ./usr/lib
5.2M    ./usr/sbin
13.9M   ./usr/include
10.7M   ./usr/local
61.5M   ./usr/share
332.3M  ./usr
3.4M    ./boot/multiboot
3.4M    ./boot
2.1M    ./sbin
1.3M    ./root
404.7M  .