System tray icon

[wharfrat]

I just installed 0.9.9 on my win2k box. I've now got a little icon in 
the system tray that tells me I have new mail. Is there a way to turn 
this off? I looked all over preferences for both the browser and email, 
but to no avail. Right clicking on it doesn't do anything either. I 
don't remember this from 0.9.8.
Thanks