Basically, it's not using a scheme that handles lack of memory properly (eg
temp file and move when done).  My post to galeon-devel explains this in a
little more detail:

On 08 Apr 2001 06:10:32 +0000, Adam Olsen wrote:
> I just got bitten by this.  When you run out of harddrive space,
> galeon will wipe all your preferences.  I don't mean when you quit, I
> mean it wipes the preferences of the currently running galeon.  That I
> might tolerate, if it weren't for the fact that it includes my
> bookmark list.  Or it did include.  I now have no bookmarks to speak
> of :(

Yeah, you are right.
But I think it's not our fault. It's bug/limitation of gnome-config api.
Other gnome application does the same. Maybe this is fixed in gconf.
Also about bookmarks, it have to be a libxml problem I think, we are
only calling his save api.
Nate, how goes with the branch ?

(the last 3 lines aren't really relevent, but I included them for completeness)