[11.04_64Bit]-Update Manager Not Working?

[Jesse Palser]

[11.04_64Bit]-Update Manager Not Working?

Hi,

When I open "Update Manager"
and click on [Check] button
it shows dialog: "Updating Cache"
but is only downloads 72B ???

I remember on 10.10, it downloaded MB's of data.
How do I fix this?
(don't remember having many updates since install 11.04)

Thanks!

Jesse