Does the limited connectivity have any effect on the broadband working? Because most of the time it just says that because AOL is being annoying. You can disable the warnings by right-clicking on the icon (probably called AOL Broadband or something similar) in the Network Connections window and selection Properties and unchecking 'Notify me when this connection has limited or no connectivity'
Sorry I can't really helpl about anything else
p.s., there's an edit button, try not to double post