gnome-update script halts on thunderbird (installing default themes?)

[Sam Lawrance]

Wilkinson, Alex wrote:

>what is Xvfb ?
>  
>
It's the X server you have when you're not having an X server.

Xvfb is a virtual framebuffer X server - "virtual" because there's no 
actual physical display. In this case, the port uses it to provide an X 
display for the install process without having to show it.

I've no idea what other uses it has, but you could search for more.

Regards
Sam