no icon in systemtray

[Sergey Manucharyan]

Interesting thing: I've build 0.9.13 versions of both
sylpheed-claws [gtk1] and sylpheed-vlaws-gtk2 - the first
one shows it's icon in the tray! I will look into their
codes to try figuring out something useful.

> It's an old-already-reported problem with some apps
> (sylpheeed has been cited several times). 
> 
> I don't know, I looked at our code several times and found
> nothing wrong. 
> 
> I checked with GNOME and the problem appears there
> sometimes too, so I'm not sure it's a bug with Xfce.

Greetings,
Sergey