[Galaxy S I9000 Q&A, Help & Troubleshooting] Silentbob999:
is that ok for you if I try to get support by using your thread or you prefer that I create a new one for my problem ?

For recap: I try to understand why /datadata is always full while CM9 is suppose to clean cache in there automatically. I think this is coming from that mysterious "System Data" that now taking 64.1Mo on my /datadata partition. That seems to correspond with the difference between result given by DU and DF command.

DF (153220) - DU (91836) = 61384 (59.9Mo)

***************************
* DU result *
***************************
Result of Data usage
Total : 172.5M (176656)
Data/data : 80.5M (82420)
Datadata : 89.7M (91836)

Libs Total : 41.2M (42144)
Libs in /Data/data : 38.2M (39080)
Libs in /Datadata : 0 (0)

Cache Total : 69.6M (71247)
Cache in /Data/data : 35.9M (36784)
Cache in /Datadata : 33.7M (34467)

Databases Total : 30.9M (31657)
Databases in /Data/data : 5.4M (5544)
Databases in /Datadata : 25.5M (26137)

Free space in /datadata : 83164

***************************
* DF result *
***************************
Filesystem Size Used Free Blksize
/datadata 172M 149M 22M 4096
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/block/mtdblock6 176128 153220 22908 87% /datadata
Filesystem Size Used Available Use% Mounted on
/dev/block/mtdblock6 172.0M 149.6M 22.4M 87% /datadata
Filesystem 1M-blocks Used Available Use% Mounted on
/dev/block/mtdblock6 172 150 22 87% /datadata

***************************
*** TYPES ***
***************************
1206 - app_appcache
3969 - app_databases
23432 - files
31681 - databases
39080 - lib
71251 - cache

***************************
*** Cache ***
*** TOP 20 ***
***************************
44	/datadata/com.smartandroidapps.audiowidget/cache
61	/datadata/com.google.android.youtube/cache
72	/data/data/ca.lapresse.android.lapressemobile/cache
72	/data/data/com.aurorasoftworks.quadrant.ui.standard/cache
96	/datadata/com.mikersmicros.fm_li/cache
112	/data/data/com.mobilityflow.torrent/cache
152	/data/data/com.pelmorex.WeatherEyeAndroid/cache
1617	/datadata/com.eolwral.osmonitor/cache
3106	/datadata/com.estrongs.android.pop/cache
4692	/data/data/com.artelplus.howtotie/cache
4692	/data/data/com.et.easy.download/cache
4704	/data/data/com.koushikdutta.rommanager/cache
4724	/data/data/os.tools.scriptmanager/cache
5139	/datadata/com.android.vending/cache
5713	/datadata/ccc71.bmw/cache
5713	/datadata/com.aor.droidedit/cache
5724	/data/data/com.unit.convert/cache
5760	/data/data/ds.cpuoverlay/cache
5972	/data/data/com.android.email/cache
12532	/datadata/com.quoord.tapatalkpro.activity/cache

***************************
*** Database ***
*** TOP 10 ***
***************************
615	/datadata/com.android.providers.telephony/databases
634	/datadata/com.google.android.apps.plus/databases
823	/datadata/com.google.android.apps.docs/databases
1168	/datadata/com.android.providers.contacts/databases
1379	/datadata/dk.tacit.android.foldersync.full/databases
1532	/datadata/com.dropbox.android/databases
3354	/datadata/com.kiragames.unblockmefree/databases
4315	/datadata/com.android.email/databases
5520	/data/data/ca.lapresse.android.lapressemobile/databases
6404	/datadata/com.android.providers.media/databases

***************************
***************************