[ubuntu-uk] Slow Log In since upgrade

[Philip Stubbs]

Since upgrading to the latest version of Ubuntu, I have been getting a
prolonged pause from entering my password to the desktop displaying.
The GDM window disappears, and all I see is the background and my
pointer. Some time later, say 15 seconds, the desktop comes up.

How can I find out what is going on during that pause so that I can fix it?

Thanks.
-- 
Philip Stubbs