Update Manager

[John Lindsay <jclind@sentex.net>]

Is there a problem with the update manager or the sites from which it 
get updates? I haven't seen an update since Friday Feb 13. It tells me 
my system is up-to-date but up until last Friday I would get updates 5-6 
times a week. Also,  whenever  the update manager starts up, mplayer 
shows up in the list unchecked and greyed out. How can I remove it from 
the list?

John