Wrong icon for "actions" button in chat windows
The list currently uses the "preferences" icon which in default Gnome icon theme looks like a pair of tools. This is not correct for most of the other themes including the great Tango project. For me the button looks like a big set of switches, my friend who uses another theme has a big clockwork cog, both not really related to "actions". Therefore I suggest using another stock icon, more appropriate and making the choice based on Gnome icon naming conventions and not by easthetical preference.