dconf-service performs 20K write-operation to ~/.config/dconf/user on every caps-lock hit

Everytime when I hit the caps-lock key, the “dconf-service” seems to perform a 20K write-operation to the “~/.config/dconf/user”. The file doesn’t increase in size but the date of last change is changing.

I found that out by looking to the output of “iotop -oa” while hitting caps-lock several times, what gave the assumption that the toggle of caps lock (one hit) produces a 20K write operation to disk.

After that I looked for the specific file which dconf-service writes to by using “watch -n 1 "lsof -p <process-id of dconf-service>"”. If you hit caps-lock for multiple times, you will see that there is an operation to the file “~/.config/dconf/user”, indicated by the following lines, which are displayed additionally:

COMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
dconf-ser 1904 andreas mem REG 8,1 15587 165262 /home/andreas/.config/dconf/user
dconf-ser 1904 andreas 17u REG 8,1 15587 165269 /home/andreas/.config/dconf/user

I just wonder whether this behaviour is desired or a bug because it may be not necessary. Other users with a similar configuration confirmed this behaviour, users with other distributions and/or desktop environments confirmed that this behaviour doesn’t appear.

Release: Ubuntu 11.10
Arch: amd64
Package: dconf-gsettings-backend
Uname: Linux 3.0.0-12-generic x86_46
Using Unity